00521nam a22001817a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093100002900102245012300131260003000254300001000284650002400294650002100318CHAP20220329134546.0971013s1975 mx r 00010 eng d a22198 a23170 a27265 cCHAP00aColmenares, J. Humberto.10aAdoption of hybrid seed and fertilizers among colombian corn growers :babridged by CIMMYc/por J. Humberto Colmenares aMéxico :bCIMMYT,c1975 a29 p.14aMaízxHíbridos.14aMaízxSemilla.