TY  - BOOK
AU  - Giller, Ken E
TI  - Nitrogen fixation in tropical cropping systems
SN  - 0851994172
U1  - 631.461.5(213.5) 
PY  - 2001///
CY  - UK
PB  - CABI Publishing
KW  - Agroforestry
KW  - Cover crops
KW  - Cropping systems
KW  - Nitrogen fixation
ER  -