TY  - BOOK
AU  - Quispel, A., ed.
TI  - The biology of nitrogen fixation
SN  - 0 7204 7135 4
U1  - 631.9/QUI 
PY  - 1974///
CY  - Amsterdam
PB  - North-Holland Publishing Company
KW  - Nitrogen--Fixation
ER  -