APA (7th ed.) Citation

Curtin, G. C. (1971). Utilization of mull (forest humus layer) in geochemical exploration in the Empire district, Clear Creek County, Colorado: Sampling of the forest humus layer may be an effective geochemical tool in areas where the bedrock is covered by colluvium or glacial drift. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Curtin, Gary C. Utilization of Mull (forest Humus Layer) in Geochemical Exploration in the Empire District, Clear Creek County, Colorado: Sampling of the Forest Humus Layer May Be an Effective Geochemical Tool in Areas Where the Bedrock Is Covered by Colluvium or Glacial Drift. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1971.

MLA (9th ed.) Citation

Curtin, Gary C. Utilization of Mull (forest Humus Layer) in Geochemical Exploration in the Empire District, Clear Creek County, Colorado: Sampling of the Forest Humus Layer May Be an Effective Geochemical Tool in Areas Where the Bedrock Is Covered by Colluvium or Glacial Drift. United States Department of the Interior, Geological Survey, 1971.