TY  - BOOK
AU  - Schnitzer M
AU  -  Khan S U
TI  - Humic substances in the environment
T2  - Books in soils and the environment
U1  - J:10aES, L2-;1 
PY  - 1972///
CY  - New York    
PB  -  Marcel Dekker       
KW  -  Soil
KW  - Soil
ER  -