TY  - BOOK
AU  - Tan,Kim H.
TI  - Humic matter in soil and the environment: principles and controversies 
SN  - 1482234459 :
PY  - 2014///
CY  - Boca Raton
PB  - CRC Press
KW  - Humus
KW  - Environmental aspects
KW  - Biodegradation
KW  - Soils
KW  - Humic acid content
ER  -