Orton, W. A. (William Allen). Wilt disease of the cowpea and its control,Webber, Herbert J. Cowpea resistant to root knot (heterodera radicicola),United States. Bureau of Plant Industry books & textbook
Some diseases of the cowpea Volume no.17 1902 [Leather Bound]
Generic /2023-01-01 Leather Bound / 58 Pages
