@misc{indiciaefe1a5eee1b96,
  title = {User's guide for polyethylene-based passive diffusion bag samplers to obtain volatile organic compound concentrations in wells. Part 2, Field tests},
  author = {Don A. Vroblesky},
  year = {2001},
  doi = {10.3133/wri014061},
  url = {https://pubs.usgs.gov/publication/wri014061},
  note = {Source identifier: wri014061}
}