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Preparation characteristics of coal occurring in Indiana County, Pa.

Published Year

• 1950-1959 (1)

Subject

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

Author

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

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