Azolla as a green manure : use and management in crop production /
Thomas A. Lumpkin and Donald L. Plucknett.
- Boulder, Colo. : Westview Press, 1982.
- xx, 230 p. : ill.
Bibliography: p. 177-225.
089158451X (pbk.)
Azolla. Azolla as fertilizer. Rice--Fertilizers. Azolla as feed.