TY  - GEN
AU  - Quispel, A
TI  - Biology of Nitrogen fixation
T2  - Frontiers of Biology Vol. 33
SN  - 0 7204 7135 4
U1  - 581.133 5 QUI 
CY  - Oxford, North - Holland Publishing Co
KW  - Nitrogen fixation / Algae
ER  -