TY  - BOOK
AU  - x, x
AU  - Newton,W.
TI  - Recent developments in nitrogen fixation: x
SN  - 0125173504
U1  - 631.84/R295 
PY  - 1977///
CY  - London,New York
PB  - Academic Press
KW  - Nitrogen-fixation
KW  - Micro-organism
N1  - includes
ER  -