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by McLaren, J.S. -- (33rd :, Easter School in Agricultural Science 1981 : University of Nottingham).
by Amir Muhammed; Aksel, Rüstem; Von Borstel, R. C. -- International Symposium on Genetic Control of Diversity in Plants, Lahore, c1976..
by Johnson, C.B.
by Horn, Wolfgang. -- Eucarpia
by Amir Muhammed; Aksel, Rüstem; Von Borstel, R. C. -- International Symposium on Genetic Control of Diversity in Plants, Lahore, 1976..
by Kosuge, Tsune; Meredith, Carole; Hollaender, Alexander.
by Thorpe, Trevor A.
by Gasser, J. K. R. (John Kenneth Russell). -- Commission of the European Communities. Environment Research Programme
by Reybold, William U. (William Umstd); Petersen, Gary W. -- Soil Science Society of America. Division S-5; Soil Science Society of America. Meeting (1985 : Chicago, Ill.)
by Boardman, John; Dearing, J. A. (John A.); Foster, Ian (Ian D. L.). -- British Geomorphological Research Group; Institute of British Geographers. Conference (1989 : Coventry Polytechnic)
by Gustafson, J. P. -- (16th : Stadler Genetics Symposium 1984 : University of Missouri-Columbia).
by Greenland, D. J; Lal, R. -- International Institute of Tropical Agriculture; Agricultural Research Council of Nigeria -- International Conference on Soil Conservation and Management in the Humid Tropics, Ibadan, Nigeria, 1975..
by -- Indian Society of Soil Science -- Symposium on Potassium in Soils, Crops and Fertilizers, Orissa University of Agriculture and Technology, 1975..
by Dowdy, R. H; Stelly, Matthias. -- American Society of Agronomy; Soil Science Society of America
by Hadas, A. -- International Society of Soil Science; Agudah le-madaʻ ha-ḳarḳaʻ be-Yiśraʾel -- Symposium on Soil-Water Physics and Technology, Reḥovot, Israel, 1971..
by Manshard, Walther; Morgan, William B.
by Nelson, D. W. (Darrell W.). -- American Society of Agronomy. Division S-1
by Bergström, L; Kirchmann, H. (Holger).
by Hillel, Daniel.
by Boardman, John. -- Quaternary Research Association (Great Britain)