TY  - BOOK
AU  - Broughton,W.J.
AU  - Puhler,A.
TI  - Nitrogen fixation: molecular biology. 
SN  - 0-19854575-4
AV  - AMU QR89.7.N55 
PY  - 1986///
CY  - Oxford
PB  - Clarendon Press
KW  - Nitrogen
KW  -  Fixation
KW  - Collected works
KW  - Microorganisms
KW  - nitrogen
KW  - Fixing
N1  - Includes bibliographical references
ER  -