TY  - BOOK
AU  - Kumada,Kyōichi
TI  - Chemistry of soil organic matter
SN  - 0444989366 (Elsevier) :
AV  - S592.8 .K86 1987
U1  - 631.4/17 19
PY  - 1987///
CY  - Tokyo, Amsterdam, New York
PB  - Japan Scientific Societies Press, Elsevier
KW  - Humus
KW  - Agriculture
KW  - Soils
KW  - Humic acid content
N1  - Includes index; Bibliography: p. 221-235
ER  -