@misc{indiciae2bb245d6d10b,
  title = {Exchangeable hydrogen explains the pH of spodosol Oa horizons},
  author = {D.S. Ross and R. J. Bartlett and M.B. David and G.B. Lawrence},
  year = {1996},
  doi = {10.2136/sssaj1996.03615995006000060044x},
  url = {https://pubs.usgs.gov/publication/70018080},
  note = {Source identifier: 70018080}
}