Gjessing, Egil T.

Physical and chemical characteristics of aquatic humus / Egil T. Gjessing. - Ann Arbor : Ann Arbor Science, cop. 1976. - VII, 120 p. ; 24 cm.

Contén bibliografía e índice.

0-250-40115-0


Humus.
Suelos--Análisis.

631.417.2

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