Los Bancos geneticos y la alimentacion mundial /

by Plucknett, Donald L. 1931-
Published 1992

Azolla as a green manure : use and management in crop production /

by Lumpkin, Thomas A.
Published 1982

Bibliography of taro and edible aroids /

by Rotar, Peter P., Rotar, Peter P., Bird, Barbara K.
Published 1978

Tropical forests and their crops /

by Smith, Nigel J.H.
Published 1992

The World's worst weeds : distribution and biology /

by Holm, LeRoy G.
Published 1991