@misc{indiciae54c92db0fd10,
  title = {Preliminary results of the North American Soil Geochemical Landscapes Project, northeast United States and Maritime Provinces of Canada},
  author = {Eric C. Grunsky and David B. Smith and Peter W.B. Friske and Laurel G. Woodruff},
  year = {2009},
  url = {https://pubs.usgs.gov/publication/70046624},
  note = {Source identifier: 70046624}
}