Trees Crops and Soil Fertility Concepts and Research Methods - G. Schroth; F.L. Sinclair (Wallingford CABI Publishing, 2003)
G. Schroth & F.L. Sinclair: Trees Crops and Soil Fertility Concepts and Research Methods. Wallingford. CABI Publishing, 2003. 0-85199-593-4--(631.422SCH)
ENGLISH