Zaria, Abdu Aminu <br/><br/>
Phenotypic and genotypic correlations in cowpea (vigna unguiculata (L) Walp) 
Abdu Aminu Zaria 
 - Ahmadu Bello University, Zaria  Department of Plant Science,  1988 
 - x, 86 leaves: ill., tables 
<br/><br/> Bibliography: leaves 79-86