Search U.S. government technical reports digitized or harvested by TRAIL.

Keyword Search

Preparation characteristics of coal occurring in Armstrong County, Pa.

Published Year

• 1950-1959 (1)

Subject

• Coal preparation--Pennsylvania--Armstrong County (1)
• Coal--Pennsylvania--Armstrong County--Sampling (1) *

Author

• Bailey, A. L. (1)
• Crentz, William L. (1) *
• Steele, Fern. (1)

• About TRAIL
• FAQ
• Join TRAIL
• Contact Us

Search developed and maintained by the University of Washington Libraries
Copyright 2010