@misc{indiciaef67fa35d10d6,
  title = {Urea utilization by lactating cows.},
  author = {J H Clark and S L Spahr and R G Derrig},
  year = {1973},
  doi = {10.3168/jds.s0022-0302(73)85248-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/4736085/},
  note = {Source identifier: 4736085}
}