TY  - BK
AU  - Mangelsdorf,P.C.
TI  - The origin of corn
PY  - 1981///
KW  - Breeding methods
KW  - AGROVOC
KW  - Evolution
KW  - Progeny forms
KW  - Provenance
KW  - Selection
KW  - Zea mays
ER  -