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Subsea Systems, Inc. marine geophysics, marine geophysical equipment
air gun arrays  cable counters  marine geophysical equipment  payout indicators 
www.subsea-usa.com - 2009-02-06
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The Marschall Acoustics Group supplies geophysical instrumentation, seismic equipment, towed hydrophone arrays, and custom audio electronics.
piezoplastic  piezo-plastic 
www.hydrophones.com - 2009-02-07
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boating
marine
moving coil
geophysics
boat
piezoplastic
geophysical
geology
piezo-plastic
exploration
boats
petroleum exploration
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