@PROCEEDINGS {WIEN:1976b, title = {Genetical and environmental effects of pod-filling time in cowpea (Vigna unguiculata L. Walp.)}, author = {Wien, H. C. and Ackah, E. E. }, booktitle = {Presented at the American Society of Agronomy Meetings, Houston, Texas}, year = {1976}, month = {December}, }