00810nam a22002297a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093100003500102245009700137260003200234300001100266500011900277650004600396650003400442650003500476650003500511650003400546CHAP20220329140303.0971013s1983            r     00010     d  a49788  a50760  a54910  cCHAP00aVillanueva Martínez, Manuel.  aStaple grain production in Mexicob: a study of recent trends, their causes and Perspectives  a(s.l.) :bThe Author,c1983  a129 h.  aThesis (Master of Sciences in Agricultural Economics) -- University of Oxford. Institute of Agricultural Economics14aAgriculturaxAspectos economicoszMexico.14aArrozxAspectos económicos.14aFrijolxAspectos económicos.14aMaízxAspectos económicos.14aTrigoxAspectos económicos.