TY  - BOOK
AU  - Stewart W D P
TI  - Nitrogen fixation by free-living micro-organisms
SN  - 0-521-20708-8
U1  - 572.54529 
PY  - 1957///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Microorganisms
KW  - Nitrogen
KW  - Nitrogen-fixation
ER  -