@misc{indiciae7a333363bf4d,
  title = {Some aspects of chemical equilibrium in ground water},
  author = {J.D. Hem},
  year = {2006},
  doi = {10.1111/j.1745-6584.1963.tb01924.x},
  url = {https://pubs.usgs.gov/publication/70221084},
  note = {Source identifier: 70221084}
}