Bray, J., Schnittker, J. Legumes or commercial fertilizers? Economics of crop rotation in eastern and Central Kansas. Manhattan: 1956 16 p. : ill.
Bray, J., Schnittker, J. Legumes or commercial fertilizers? Economics of crop rotation in eastern and Central Kansas. Manhattan: 1956 16 p. : ill.
Bray, J., Schnittker, J. (1956) Legumes or commercial fertilizers? Economics of crop rotation in eastern and Central Kansas, Manhattan: 16 p. : ill.
Bray, J., & Schnittker, J. (1956). Legumes or commercial fertilizers? Economics of crop rotation in eastern and Central Kansas. Manhattan: 16 p. : ill.
Bray J, Schnittker J. Legumes or commercial fertilizers? Economics of crop rotation in eastern and Central Kansas. Manhattan: 1956. p. 16 p. : ill.