1. A PNEUMATIC SEISMIC ENERGY SOURCE FOR SHALLOW WATER / MARSH AREAS*
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3. E. I. Halperin, 1965 , "The Study of Multiply Reflected Waves in Vertical Seismic Profiling". Izvestia, Earth Physics Series, No. 12.
4. DEEP‐HOLE GEOPHONE STUDY IN GARVIN COUNTY, OKLAHOMA
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