TY  - BOOK
AU  - Bergersen,F.J.
TI  - Methods for evaluating biological nitrogen fixation
PY  - 1980///
CY  - Chichester [Eng.], New York
PB  - J. Wiley
KW  - Nitrogen-fixing microorganisms
KW  - Nitrogen
KW  - Fixation
N1  - "A Wiley-Interscience publication."
ER  -