THREADED CONNECTION OF DRILL PIPES
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Year of Publication 07.07.1982
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Year of Publication 07.07.1982
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DOUBLE DRILL PIPE
MELNIK EDUARD D,SU, KUZNETSOV ALEKSANDR V,SU, PESHKOV ANATOLIJ N,SU, KARDYSH VADIM G,SU, DAVYDOV GEORGIJ A,SU, SMIRNOV OLEG V,SU
Year of Publication 23.02.1986
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Year of Publication 23.02.1986
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