TY  - BOOK
AU  - Frimmel,F.H .
AU  - Christman,R.F  .
TI  - Humic substances and their role in the environment / 
T2  - Dahlem workshop reports.Life science research report;41, 
SN  - 0471918172
U1  - 631.417 
PY  - 1988///
CY  - Chichester : 
PB  - John Wiley & Sons , 
KW  - HUMUS
N1  - Include index
ER  -