TY  - REP
AU  - Ceballos,H.
AU  - Pandey,S.
TI  - Germplasm development and regional testing:  South America
U1  - 338.16 
PY  - 1993///
KW  - Germplasm
KW  - AGROVOC
KW  - Progeny testing
KW  - Research projects
KW  - Selection
KW  - South America
KW  - Zea mays
KW  - Research institutions
KW  - Hybrids
T2  - International Testing: Evaluating and Distributing Maize Germplasm Products. Wedderburn, R.N.
ER  -