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A solid-state amplifier for the bridge circuit of a mercury detector

Evaluation of a radioisotopic X-ray drill-hole probe :delineation of lead ores

Calibration models for geophysical borehole logging

Published Year

• 1970-1979 (3) *

Subject

• Prospecting--Geophysical methods (3) *
• Geochemical prospecting (1)
• Mercury--Measurement--Equipment and supplies (1)
• Mercury--Toxicology (1)
• Oil well logging (1)
• Radioisotopes (1)
• X-rays--Industrial applications (1)

Author

• Campbell, William Joseph, (1)
• Lepper, C. Melvin. (1)
• Marr, Harold E., (1)
• Snodgrass, James J. (1)

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