TY  - BOOK
AU  - Colmenares, J. Humberto.
TI  - Adoption of hybrid seed and fertilizers among colombian corn growers: abridged by CIMMY
PY  - 1975///
CY  - MÃ©xico
PB  - CIMMYT
KW  - MaÃ­z
KW  - HÃ­bridos
KW  - Semilla
ER  -