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11 results returnedAnalyses of natural gases, 1969
Analyses of natural gases, 1970
Three mine fire control projects in northeastern Pennsylvania
Analyses of natural gases, 1971
Analyses of natural gases, 1972,
Analyses of natural gases, 1973
Analyses of natural gases, 1974
Helium resources of the United States, 1973
Analyses of natural gases, 1976
Published Year
Subject
- Helium (11) *
- Natural gas (5)
- Natural gas--Analysis--Tables (2)
- Gases--Analysis (1)
- Mine fires (1)
- Natural gas--Analysis (1)
Author
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