00437nam a2200145Ia 4500008004100000082001400041100001600055245005400071260005100125300000800176650004100184650003400225653001600259700001600275170901s1959    xx            000 0 und d  a633bW66P  aWolfe, T.K. 0aProduction of Field CropsbA textbook of Agronomy  aNew YorkbMcGraw Hill Book Company, Inc.c1959  a653  aAgriculture and related technologies  aTechnology (Applied sciences)  aField crops  aKipps, M.S.