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by Stewart, B. A. (Bobby Alton). -- Soil Science Society of America; International Society of Soil Science. Committee on Soil Conditioners
by -- American Crystallographic Association
by Bartelli, Lindo Joseph. -- Soil Science Society of America; American Society of Agronomy; American Society of Planning Officials
by Morgan, R. P. C. (Royston Philip Charles). -- National College of Agricultural Engineering -- International Conference on Soil Conservation (1980 : National College of Agricultural Engineering..
by Buresh, R. J; Sánchez, Pedro A; Calhoun, Frank Gilbert. -- American Society of Agronomy. Division A-6; American Society of Agronomy. Division S-2; International Centre for Research in Agroforestry; American Society of Agronomy. Meeting (88th : 1996 : Indianapolis, Ind.); Soil Science Society of America. Meeting (88th : 1996 : Indianapolis, Ind.)
by Rees, R. M. (Robert M.).
by -- International Society of Soil Science -- (7th : International Congress of Soil Science 1960 : Madison, Wis.).
by -- Food and Agriculture Organization of the United Nations -- Technical Meeting on the Use of Isotopes in Soil Organic Matter Studies, Brunswick, 1963. [from old catalog].
by -- Indo-Pacific Fisheries Council; Food and Agriculture Organization of the United Nations. Regional Office for Asia and the Far East
by Raper, C. David; Kramer, Paul J. (Paul Jackson). -- Duke University -- Workshop on Crop Reactions to Water and Temperature Stresses in Humid, Temperate Climates (1980 : Duke University).
by -- Soil Science Society of America
by Nelson, Lewis B. (Lewis Bailey). -- Soil Science Society of America
by Okali, Christine; sumberg, James; Farrington, John.
by Arai, Tamio. -- (9th : International Conference on Intelligent Autonomous Systems 2006 : University of Tokyo).
by Jenkins, S. H. (Samuel Harry). -- International Association on Water Pollution Research. Conference (10th : 1980 : Toronto, Ont.)