@misc{indiciaef1dde0906ac6,
  title = {The nitrogen fixation genes.},
  author = {S L Streicher and E G Gurney and R C Valentine},
  year = {1972},
  doi = {10.1038/239495a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/4563018/},
  note = {Source identifier: 4563018}
}