TY  - BOOK
AU  - Ghabbour, Elham. A
AU  - Davies, Geoffrey
TI  - Understanding humic substances: advanced methods, properties and applications
SN  - 9780854047994
U1  - 631.417 GHA 
PY  - 1999///
CY  - New Delhi
PB  - The royal society of chemistry
KW  - Technology
ER  -