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| | Information Services - Oil Industry Directories since 1946 |
 | | A worldwide reference to companies and key personnel, that provide geophysical equipment, supplies, and services, including gravity, magnetometer, and seismograph contractors, geological and geophysical modeling, and other forms of exploration geophysics. |
 | | Known and recognized worldwide as the leading source of information for the geophysical industry. |
 | | A comprehensive listing of companies and individuals directly connected with, or engaged in, oil exploration, drilling and production, including oil field equipment and services, drilling equipment and mud, well completion equipment and services, workover and well servicing, logging service, secondary recovery systems, environmental control, and oil industry health and safety. |
| www.geophysicaldirectory.com (141 words) |
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