@misc{indiciae6a2ae6dffff3,
  title = {Meteorological variables and concentrations of helium, carbon dioxide, and oxygen in soil gases collected regularly at a single site for more than a year},
  author = {M. E. Hinkle and J. L. Ryder},
  year = {1987},
  doi = {10.3133/ofr87449},
  url = {https://pubs.usgs.gov/publication/ofr87449},
  note = {Source identifier: ofr87449}
}