TY  - BOOK
AU  - William Edward Newton
AU  - William H.Orme Johnson
TI  - Nitrogen Fixation
SN  - 0839115601
U1  - 589 
PY  - 1980///
CY  - USA
PB  - University Park Press
KW  - English
KW  - Nitrogen-fixing microorganisms
KW  - Nitrogen
KW  - Nitrogen Fixation
KW  - General
N1  - v. 1. Free-living systems and chemical models
ER  -