Alberini, A., Cropper, M., Fu, T., Krupnick, A., Liu, J. T., Shaw, D. and Harrington, W. 1997, 'Valuing health effects of air pollution in developing countries: The case of
Taiwan' Journal of Environmental Economics and Management, vol. 34, pp. 107-126. Blair, A. and Zahm, S. H. 1993, 'Patterns of pesticide use among farmers: Implications for epidemiologic
research' Epidemiology, vol. 4, pp. 55-62. Brien, M., Kenkel, D., Kelly, A and Fabian, R. 1994, 'Empirical results from household personal interviews', (chapter 8, pp. 167-185), in Valuing
Health For Policy, eds. G. Tolley, D. Kenkel and R. Fabian, The University of Chicago Press. Carson, R. T., June, 22nd, 1998. Personal communication by e-mail. Chandrasekera, A. I.,
Wettasinghe, A and Amarasiri, S. L. 1985, 'Pesticide usage by vegetable farmers', Paper presented at Annual Research Conference ISTI, Gannoruwa, Sri Lanka. Chestnut, L. G., Colome, S. D.,
Keller, L. R., Lambert, W., E., Ostrow, B., Rowe, R. D. and Wojciechowski, S. L. 1988, Heart Disease Patients Averting Behaviour, Costs of Illness, and Willingness-To-Pay to Avoid Angina
Episodes, Report for USEPA contract no. 68-01-7033, U. S. Environmental Protection Agency, Washington, DC. Chestnut, L. G., Keller, R., Lambert, W. E. and Rowe, R. D. 1996, 'Measuring heart
patients willingness to pay for changes in angina symptoms', Medical Decision Making, vol. 76, pp. 65-77. Ciriacy-Wantrup, S. V. 1947, 'Capital returns from soil conservation practices',
Journal of Farm Economics, vol. 29, pp. 1188-1190. Collins, J. J., Strauss, M. E. Levinskas G. J. and Conner, P. R. 1993, 'The mortality experience of workers exposed to 2,3,7,8
tetrachlorodibenzopdioxin in a trichlorophenol process accident', Epidemiology, vol. 4, pp. 7-13. Cowan, R and Gunby, P. 1996, 'Sprayed to death: Path dependence, lock-in and pest control
strategies', The Economic Journal, vol. 106, pp. 521-542.. Davis, R. K. 1963, 'The value of big game hunting in a primitive forest' in Transactions of the Twenty-Ninth North American
Wildlife Conference, Washington DC: Wildlife Management Institute. Department of Labour. 1978, Employment Survey Data, Government Publication Press, Colombo, Sri Lanka. Department of Census
and Statistics. 1983. Sri Lanka Census of Agriculture, 1982, General Report, Ministry of Plan Implementation, Colombo, Sri Lanka. Dharmawardena, L. I. M. 1994, 'Pesticide poisoning among
farmers in a health area in Sri Lanka' Ceylon Medical Journal, vol. 39, pp. 101-103. Dickie, M, Fisher, A. and Gerking, S. 1987, 'Market transactions and hypothetical demand data: A
comparative study' Journal of American Statistical Association, vol. 82, pp. 69-75. Diener, A., O'Brien, B and Gafni, A. 1998, 'Health care contingent valuation studies: A review and
classification of the literature' Health Economics, vol. 7, pp. 313-326. Dinham, B. 1993, The Pesticide Hazard: A Global Health and Environmental Audit, Zed books. Donaldson, C. 1990,
'Willingness to pay for publicly provided goods: A possible measure of benefit?' Journal of Public Economics, vol. 9, pp. 103-118. Donaldson, C. 1993, Theory and practice of willingness to
pay for health care. Discussion paper, 01/93, Department of Public Health and Economics, University of Aberdeen. Feldstein, P, J. 1993, Health Care Economics, 4th Edition, Delmar
Publishers, Albany, New York. Fernando, P. R. 1991, Management of Acute Poisoning. National Poisons Information Centre, General Hospital, Colombo, Sri Lanka, pp. 1-226. Grossman, M. 1972,
'On the concept of health capital and the demand for health' Journal of Political Economy, vol. 80, pp. 223-55. Halstead, J. M, Lindsay, B. E. and Brown, C. M. 1991, 'Use of Tobit model in
contingent valuation: Experimental evidence from Pemigewasset wilderness area' Journal of Environmental Management, vol. 33, pp. 79-89. Hanley, N and Spash, C. L. 1994, Cost-Benefit
Analysis and the Environment, Edward Elgar. Hanemann, W. M. 1994, 'Valuing the environment through contingent valuation' Journal of Economic Perspectives, vol. 8, pp. 19-43. Harrington, W.
and Portney, P. R. 1987, 'Valuing the benefits of health and safety regulations' Journal of Urban Economics, vol. 22, pp. 101-112. Harrington, W., Krupnick, A. J., Spofford, and Walter, O.
JR., 1989, 'The benefits of preventing an outbreak of giardiosis', Journal of Urban Economics, vol. 25, pp. 116-137. Hoek Van Der, W., Konradsen, F, Athukorale, K., Wanigadewa, T. 1997,
Pesticide poisoning: A major health problem in Sri Lanka. Social Science and Medicine (submitted for publication). 33p. Hoar, S. K., Blair, A., Holmes, F. F., Boysen, C. D., Robel, R, J.,
Hoover, R. and Fraumeni, J. F. 1986, 'Agricultural herbicide use and risk of lymphoma and soft tissue sarcoma' Journal of American Medical Association,vol. 256, pp. 1141-1147. International
Agricultural Development, 1990, 'An ecological way for Asian agriculture', March/April, vol. 10, pp. 5-6. Jeyaratnam, J., Alwis Seneviratne, R. S. De. and Copplestone, J. F. 1982, 'Survey
of pesticide poisoning in Sri Lanka' Bulletin of the World Health Organization, vol. 60, pp. 615-619. Jeyaratnam, J., Luw, K. C., and Phoon, W. O. 1987, 'Survey of acute pesticide poisoning
among agricultural workers in four Asian countries', Bulletin of the World Health Organization, vol. 65, pp. 521-527. Jeyaratnam, J. 1990, 'Acute pesticide poisoning: A major global health
problem' World Health Statistics Quarterly, vol. 43, pp. 133-143. Johannesson, M. 1992, 'Economic evaluation of lipid lowering: A feasibility test of the contingent valuation approach',
Health Policy, vol. 20, pp. 309-320. Johannesson, M., Jonsson, B. and Borgquist, L. 1991, 'Willingness to pay for antihypertensive therapy: Results of a Swedish pilot study' Journal of
Health Economics, vol. 10, pp. 461-474. Johannesson, M., Johansson, P.-O, Kristrom, B., Gerdtham, U-.G. 1993, 'Willingness to pay for antihypertensive therapy-further results', Journal of
Health Economics, vol. 12, pp. 95-108. Johansson, P.-O. 1995, Evaluating Health Risks. An Economic Approach, Cambridge University Press. Kenkel, D., Berger, M and Blomquist, G. 1994,
'Contingent valuation of health', in Valuing Health for Policy, chapter four, pp.72-104, eds. G. Tolley, D. Kenkel,. and R. Fabian, The University of Chicago press, Ltd., London. Kartman,
B., Anderson, F. and Johannesson, M. 1996, 'Willingness to pay for reductions in angina pectoris attacks', Medical Decision Making, vol. 16, pp. 248-253. Loehman, E. T., Berg, S. V.,
Arroyo, A. A, Hedinger, R. A., Schwartz, J. M., Shaw, M. E., Fahien, R. W., De, V. H., Fishe, R. P., Rio, D. E., Rossley, W. F. and Green A. E. S. 1979, 'Distributional analysis of regional
benefits and cost of air quality control', Journal of Environmental Economics and Management, vol. 6, pp. 222-243. Loomis, J. B and du Vair, H. P. 1993, 'Evaluating the effects of
alternative risk communication devices on willingness to pay: results from a dichotomous choice contingent valuation experiment', Land Economics, vol. 69, pp. 287-298. Menz, K. m, Auld, B.
A. and Tisdell, C. A. 1984. 'The role for biological weed control in Australia', Search, vol. 15, pp. 208-210. Ministry of Finance, Bangladesh, 1992, Bangladesh Economic Survey, 1990/91,
Govt. of the Peoples Republic of Bangladesh. National Poisons Centre, 1997, Pesticide Statistics, Colombo General Hospital, Sri Lanka. Nielson, E. G. and Lee, L. K., 1987, The Magnitude and
Costs of Groundwater Contamination from Agricultural Chemicals: A National Perspective, Washington DC: U.S. Department of Agriculture, Agricultural Economic Report No. 576. NOAA Oceanic and
Atmospheric Administration (NOAA), 1993, 'Report of the NOAA on contingent valuation', Federal Register/Vol.58, No. 10/ Friday, January, 15/ proposed rules. Portney, R. P. 1994, 'The
contingent valuation debate: Why economists should care', Journal of Economic Perspectives, vol. 8, Fall issue, pp. 3-17. Ready, R., Buzby, J. C and Hu, D. 1996, 'Differences between
continuos and discrete value estimates', Land Economics, vol. 72, pp. 397-411. Rowe, R. D., and Chestnut, L.G. 1985, Oxidants and Asthmatics in Los Angeles: A Benefits Analysis, Report no.
EPA-230-07-85010, Washington: U.S. Environmental Protection Agency Office of policy Analysis. Sivayoganathan, C., Gnanachandran, J., Lewis, J. and Fernando, M. 1995, 'Protective measure use
and symptoms among agropesticide applicators in Sri Lanka' Social Science and Medicine, vol. 40, pp. 431-436. Sloan, F. A., Viscusi, W. K., Chesson, H. W., Conover, C. J and
Whetten-Goldstein, K. 1998, 'Alternative approaches to valuing intangible health losses: the evidence for multiple sclerosis', Journal of Health Economics, vol. 17, pp. 475-497.
Sudderuddin, K. I and Kim, R. P. 1979, 'The effect of pesticides on paddy-field eco-systems', Proceedings of Trends in Applied Biology, USM, Penang, October. Tisdell, C. A., Auld, B and
Menz, K. M. 1984, 'On assessing the biological control of weeds', Protection Ecology, vol. 6, pp. 169-79. Tisdell, C. A. 1987, 'Weed control in a social context', in Weed Control Economics,
eds. B. A. Auld, K. M. Menz and C. A. Tisdell, Academic Press. Tisdell, C. A. 1990, 'Economic impact of biological control of weeds and insects' in Critical Issues in Biological Control,
eds. M. Mackauer, L. E. Ehler and J. Roland, Intercept Limited, U.K. Tisdell, C. 1991. Economics of Environmental Conservation. Elsevier Science Publishers. Tisdell, C. A. 1993.
Environmental Economics: Policies for Environmental Management and Sustainable Development. Edward Elgar. Tolley, G. S., Babcock, L., Berger, M., Bilotti., A., Blomquist, G., Fabian, R.,
Fishelson, G., Kahn, C., Kelly, A., Kenkel, D., Krumm, R., Miller, T., Ohsfeldt, R., Rosen, S., Webb, W., Wilson, W. and Zelder, M. 1986, Valuation of Reductions in Human Health Symptoms
and Risks, Report for USEPA grant no. CR-811053-01-0, U.S Environmental Protection Agency, Washington, D. C. Whittington, D. 1998, 'Administering contingent valuation surveys in developing
countries' World Development, vol. 26, pp. 21-30. Wilson, C. 1998, Cost and policy implications of agricultural pollution with special reference to pesticides, Ph.D. thesis, Department of
Economics, University of St Andrews, Scotland, U.K. Wilson, C. forthcoming, 'Environmental and human costs of commercial agricultural production in South Asia', International Journal of
Social Economics. World Health Organization (WHO)., 1990, Public Health Impact of Pesticides Used in Agriculture, pp. 79-86, WHO, Geneva. World Resources Institute., 1994, World Resources,
1994/1995, Oxford University Press. Zethraeus, N. 1998, 'Willingness to pay for hormone replacement therapy' Health Economics, vol. 7, pp. 31-38.