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by Opeña, R. T. (Romeo T.); Kyomo, M. L. -- Southern African Centre for Co-operation in Agricultural Research; Asian Vegetable Research and Development Center -- SACCAR/AVRDC Consultation on Vegetable Production in the SADCC Region (1990 : Arusha, Tanzania).
by Hatfield, Jerry L; Thomason, Ivan J. -- University of California Integrated Pest Management Program -- Conference on Biometeorology and Integrated Pest Management (1980 : University of California, Davis).
by Corbin, Frederick T.
by -- Asian Vegetable Research and Development Center -- (2nd : International Mungbean Symposium 1987 : Bangkok, Thailand).
by -- Gouvernement de la République rwandaise, the International Institute of Tropical Agriculture, and the International Development Research Centre; Rwanda; International Institute of Tropical Agriculture; International Development Research Centre (Canada)
by Jacobs, T. H; Parlevliet, J. E.
by -- Mungbean Meeting (1990 : Chiang Mai, Thailand).
by Silver, W. S; Schröder, E. C. -- University of Puerto Rico (Mayagüez Campus) -- (1st : International Workshop on "Practical Applications of Azolla for Rice Production" 1982 : Mayagüez, P.R.).
by -- Massey-Ferguson, ltd; Massey-Ferguson School of Farm Mechanisation
by Rodriguez, J. G. -- International Conference on the Significance of Insect and Mite Nutrition, University of Kentucky, 1972..
by -- International Rice Research Institute
by Green, Maurice B. (Maurice Berkeley); Spilker, Douglas A. -- American Chemical Society. Division of Pesticide Chemistry; American Chemical Society. Meeting (188th : 1984 : Philadelphia, Pa.)
by Madelin, M. F.
by Srivastava, Uma K; Vathsala, S. -- India. Ministry of Agriculture -- National Workshop on Development of Inland Fishery Resources 1983 : Ahmedabad, India..
by Zimmerman, Richard H. (Richard Hale). -- Conference on Tissue Culture as a Plant Production System for Horticultural Crops (1985 : Beltsville, Md.).
by Wallace, T. (Thomas); Martin, J. T. (John Thomas). -- Colston Research Society
by Lamb, C. A. (Cecil Alexander). -- Ohio Agricultural Experiment Station
by Watson, David L; Brown, A. W. A. (Anthony William Aldridge).
by Hoy, Marjorie A; Herzog, D. C. (Donald C.). -- Symposium on Biological Control in Agricultural Integrated Pest Management Systems (1984 : University of Florida).
