TY  - BK
AU  - Paterniani,E.
TI  - Inter-population improvement:  Reciprocal recurrent selection variations
PY  - 1968///
CY  - Mexico, DF (Mexico)
PB  - CIMMYT, 
KW  - Genetic variation
KW  - AGROVOC
KW  - Open pollination
KW  - Recurrent selection
KW  - Zea mays
KW  - Plant breeding
ER  -