TY  - BOOK
AU  - Sprent, Janet I.
TI  - The biology of nitrogen-fixing organisms
SN  - 0070840873
U1  - 574.133 S 77 T 
PY  - 1979///
CY  - London
PB  - Mcgraw-hill book
KW  - Biology
KW  - Nitrogen-Fixing Organisms
ER  -