@misc{indiciaec9a17a75b486,
  title = {Ovine physiological responses to elevated ambient carbon dioxide},
  author = {Apgar, W. P. and Hoover, W. H. and Sawyer, M. S. and Young, P. J.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700059305},
  note = {Source identifier: 19700059305}
}