1. Mechanisms of aphid resistance in cowpea and population dynamics of cowpea aphid Aphis craccivora Koch;Annan,1992
2. Differences in number of aphids found on lines of cowpea in a replicated trial;Dhanorkar;Tropical Grain Legume Bull.,1980
3. Potato leafroll virus spread in differentially resistant potato cultivars under varying aphid densities;Difonzo,1995
4. Components of resistance to Aphis craccivora in some cowpea varieties;Firempong;Entomol. Exp. Appl.,1988