TY  - TH
AU  - Pongkao,S.
TI  - A comparison of single-cross versus topcross performance as a basis for predicting double crosses in corn (Zea mays L.)
PY  - 1963///
CY  - Lincoln, NE (USA)
PB  - Pongkao, S., 
KW  - Crossbreeding
KW  - Maize
KW  - AGROVOC
KW  - Zea mays
KW  - Plant breeding
N1  - Thesis (M. Sc.) University of Nebraska, 1963
ER  -