Azolla as a green manure :

by Lumpkin, Thomas A.

Additional authors: Plucknett, Donald L., -- 1931- Published by : Westview Press, (Boulder, Colo. :) Physical details: xx, 230 p. : ill. ISBN: 089158451X (pbk.). Subject(s): Azolla. | Azolla as fertilizer. | Rice -- Fertilizers. | Azolla as feed. Year: 1982

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