TY  - BOOK
AU  - Bergersen, F.J.
TI  - Methods for Evaluating Biological Nitrogen Fixation
SN  - 0471277592
U1  - 574.133 
PY  - 1980///
CY  - Chichester
PB  - John Wiley and Sons
KW  - Life sciences
KW  - Pure Sciences
KW  - Microorganisms
KW  - Nitrogen fixation
ER  -