David F Siems
Analyses of the magnetic and nonmagnetic fractions of pan concentrates from the Hillsboro 15-minute quadrangle, southwestern New Mexico- Analytical results and sample locality map of stream-sediment, panned-concentrate, and rock samples from the southwest part of the Tonopah 1p0s
- Analytical results for samples of nonmagnetic heavy-mineral concentrates from the Tonopah 1p0s