TY  - BOOK
AU  - Postgate ,John  .
TI  - Nitrogen fixation / 
SN  - 052164853X
U1  - 572.545 
PY  - 1978///
CY  - Cambridge : 
PB  - Cambridge University Press , 
KW  - NITROGEN - FIXING - NICROORGANISMS
N1  - NULL
ER  -