TY  - BOOK
AU  - Graham, Peter H.
AU  - Harris, Susan C.
TI  - Biological nitrogen fixation technology for tropical agriculture; based on papers presented at a workshop..
U1  - 631.47 
PY  - 1982///
CY  - Cali
PB  - Centro Internacional de Agriclutra Tropical
KW  - Agricultura
KW  - Trópicos
KW  - Nitrógeno
KW  - Fijación
ER  -