TY  - BOOK
AU  - Sen, S.P., ed.
TI  - Biofertilizers: potentialities and problems
SN  - 8185109869
U1  - 631.847 21st ed.
PY  - 1988///
CY  - Calcutta
PB  - Naya Prokash
KW  - Biofertilizers
KW  - Nitrogen fixation
N1  - Index: p. 1-3
ER  -