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Erdman, J. A.

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Listing of geochemical data, and assessment of variability for plants and soils at the Kendrick Reclamation Project area, Wyoming: USGS Open-File Report 89-652
The use of plants in prospecting for precious metals, principally gold, a selected bibliography and topic index: USGS Open-File Report 85-118
A case for plants in exploration; gold in Douglas-fir at the Red Mountain stockwork, Yellow Pine District, Idaho: USGS Open-File Report 85-117