Soil organic matter in sustainable agriculture / edited by Fred Magdoff, Ray R. Weil. - Boca Raton, Fla. : CRC P., 2004. - 398 p. : ill., charts, diagrs. - (Advances in agro ecology) .

Includes bibliographical references..

0849312949.


Humus.
Soil ecology.
Sustainable agriculture.

S592.8 / S65