367 / | HD | COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES |
14 | DF | SEISMIC PROSPECTING {4} |
15 | DF | .~ Offshore prospecting {4} |
21 | .~.~ Signal processing {3} | |
22 | DF | .~.~.~> Transducer output weighting |
23 | DF | .~.~.~> Controlled source signalling |
24 | DF | .~.~.~> Reverberation removal |