TY  - BOOK
AU  - Chouldhry, Ghulam Ghaus.
TI  - Humic substances: : structural, photophysical, photochemical and free radical aspects and interactions with environmental chemicals
T2  - Current topics in environmental and toxicological chemistry
U1  - 631.41 
PY  - 1984///
CY  - New York
PB  - Gordon and Breach Science
KW  - Acido humico
KW  - Humus
ER  -