00482nam a22001697a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093100001800102245007500120500006400195650003400259700001900293CHAP20220329135000.0971013s                r     00010     d  a29035  a30007  a34118  cCHAP00aLeón, L. A.  aManagement of phosphurus in Andean countries of tropical Latin America  aSobretiro de: Phosphurus in Agriculture No. 76:57-73, 1979.14aFósforoxEfecto en plantas.0 aFeuster, W. E.