TY  - BOOK
AU  - Wellhausen, Edwin John.
AU  - Hernández Xolocotzi, Efraím.
AU  - Roberts, L. M.
TI  - Races of maize in México, their origin, characteristics and distribution
U1  - 633.15 
PY  - 1952///
CY  - Cambridge
PB  - Harvard University
KW  - Maíz
KW  - Variedades
KW  - México
ER  -