TY  - BOOK
AU  - Sprent,Janet I
TI  - The Biology of Nitrogen-Fixing Organisms
SN  - 0070840873
U1  - 574.133 
PY  - 1979///
CY  - London
PB  - Mc Graw-Hill Book Co.
KW  - Nitrogen--	
KW  - Fixation
KW  - Nitrogen-
KW  - fixing microorganisms	
ER  -