TY  - RPRT
TI  - Nitrogen fixation by gram-negative bacteria.
AU  - M H PROCTOR
AU  - P W WILSON
PY  - 1958
DO  - 10.1038/182891a0
UR  - https://pubmed.ncbi.nlm.nih.gov/13590163/
ID  - 13590163
ER  -