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Carbonizing properties of Allegheny County, Pa., coals

Published Year

• 1950-1959 (1)

Subject

• Coal--Pennsylvania--Allegheny County--Carbonization (1)
• Coal--Pennsylvania--Allegheny County--Testing (1) *

Author

• Birge, G. W. (1)
• Wolfson, D. E. (1) *

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