TY  - BK
AU  - Borlaug,N.E.
AU  - Krull,C.F.
TI  - Does our lack of knowledge on genotype-environmental relations hinder wheat improvement?
PY  - 1968///
CY  - Mexico, DF (Mexico)
PB  - Oficina de Estudios Especiales, 
KW  - High-yielding varieties
KW  - AGROVOC
KW  - Wheat
ER  -