@misc{indiciae4b30ffba79c2,
  title = {Genetic and environmental differences between registered and grade Holstein cows.},
  author = {R L Powell and H D Norman},
  year = {1986},
  doi = {10.3168/jds.s0022-0302(86)80745-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/3805462/},
  note = {Source identifier: 3805462}
}