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Photographic calibrations for emission spectrography using a small computer

How to find abandoned oil and gas wells

Published Year

• 1970-1979 (2) *

Subject

• Coal mines and mining--United States (1)
• Gas wells (1)
• Oil wells (1)
• Spectrograph (1)
• Spectrum analysis (1)

Author

• Heemstra, R. J. (2) *
• Armstrong, F. E. (1)
• Carroll, H. B. (1)
• Johnston, K. H. (1)

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