@INBOOK {LATTANZIO:1990, title = {Preexisting phenols and resistance to aphid in cowpea (Vigna unguiculata [L.] Walp.)}, author = {Lattanzio, V. and Linsalata, V. and Maruca, G. and Marullo, R. and Singh, B. and Singh, S. R. and Perrino, P. }, year = {1990}, type = {Cowpea genetic resources, edited by N.Q. Ng and L.M. Monti}, pages = {128--134}, publisher = {International Institute of Tropical Agriculture (IITA)}, address = {Ibadan, Nigeria}, }