GEOLOGIA ESTRATIGRAFIA Y PALEONTOLOGIA DE LA REGION DE CACAHUAMILPA MEXICO
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Laboratorio de Estudios Médicos y Biológicos, CD MEXICO, DF, MEX
Esculela Nacional Medicina, CD MEXICO, DF, MEX
Esculela Nacional Medicina, CD MEXICO, DF, MEX
Abstract
A general review with special emphasis on root rots of corn and of small grains, corn diseases, chemusco or sigatoka of bananas, rusts of wheat, organization and education