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- 73623453 contributor B2373328.
- 73623453 contributor B2373329.
- 73623453 created "1972.".
- 73623453 date "1972".
- 73623453 date "1972.".
- 73623453 dateCopyrighted "1972.".
- 73623453 extent "76 p.".
- 73623453 isPartOf "Bulletin of the Earth and Mineral Sciences Experiment Station, no. 87".
- 73623453 isPartOf "Mineral conservation series".
- 73623453 isPartOf "Pennsylvania. State University. Earth and Mineral Sciences Experiment Station. Bulletin no. 87.".
- 73623453 issued "1972".
- 73623453 issued "1972.".
- 73623453 language "eng".
- 73623453 publisher "University Park, College of Earth and Mineral Sciences, Pennsylvania State University,".
- 73623453 spatial "Pennsylvania".
- 73623453 subject "338.2/09748".
- 73623453 subject "HD9506.P382 R53".
- 73623453 subject "Mines and mineral resources Pennsylvania Statistics.".
- 73623453 title "Historical statistics of Pennsylvania's mineral industries, 1966-1970 [by] John D. Ridge [and] John H. DeYoung, Jr.".
- 73623453 type "text".