@misc{indiciae28c55e601ac2,
  title = {Cautions and suggestions for geochemical sampling in fractured rock},
  author = {Allen M. Shapiro},
  year = {2007},
  doi = {10.1111/j.1745-6592.2002.tb00764.x},
  url = {https://pubs.usgs.gov/publication/70211216},
  note = {Source identifier: 70211216}
}