@misc{indiciae5bb635013b5c,
  title = {User’s guide to the collection and analysis of tree cores to assess the distribution of subsurface volatile organic compounds},
  author = {Don A. Vroblesky},
  year = {2008},
  doi = {10.3133/sir20085088},
  url = {https://pubs.usgs.gov/publication/sir20085088},
  note = {Source identifier: sir20085088}
}