Concepts for drilling and excavating in and below the ocean bottom Naval Civil Engineering Laboratory (Port Hueneme, Calif.) contributor text book Port Hueneme, Calif Naval Civil Engineering Laboratory 1971 1971
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ENG "YF 38.535.003.01.006." "May 1971." Ocean bottom Underwater drilling TA153.U6 A3 no. 725 NCEL technical report, R 725 https://www.biodiversitylibrary.org/bibliography/47219 49897779 10.5962/bhl.title.47219 TRL