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	1.	Genetic contributions to yield gains of five major crop plants : proceedings of a symopsium sponsored by Division C-1 of the Crop Science Society of America, 2 December 1981, in Atlanta, Georgia / editor, W.R. Fehr. by Fehr, W. R Series: CSSA special publication ; no. 7 Publication details: Madison, Wis. : Crop Science Society of America : America Society of Agronomy, 1984 Availability: Not available: Main: Withdrawn (1). Add to cart (remove)
	2.	Physiological processes limiting plant productivity / [edited by] C.B. Johnson. by Johnson, Christopher B Publication details: London ; Boston : Butterworths, 1981 Availability: Not available: Main: Withdrawn (2). Add to cart (remove)
	3.	Opportunities for increasing crop yields / edited by R.G. Hurd, P.V. Biscoe, and C. Dennis. by Hurd, R. G. (Ronald Graham), 1932- Biscoe, P. V Dennis, C Association of Applied Biologists Series: The Pitman series in applied biology Publication details: Boston : Pitman, c1980 Availability: Not available: Main: Withdrawn (3). Add to cart (remove)
	4.	Moving up the yield curve : advances and obstacles : proceedings of a symposium/ sponsored by Divisions S-4, S-8, and A-4 of the American Society of Agronomy and the Soil Science Society of America ; organizing committee, Lloyd Hossner, Robert Hoeft ; editor-in-chife, Matthias Stelly ; assistant editor, Mary P. Wirtz. by Stelly, Matthias Wirtz, Mary P Soil Science Society of America. Division S-4 Soil Science Society of America. Division S-8 Soil Science Society of Agronomy. Division A-4 Series: ASA special publication ; no. 39 Publication details: Madison, Wis. : ASA: Soil Science Society of America, 1980 Availability: Not available: Main: Withdrawn (1). Add to cart (remove)

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