Petroleum engineer international - Vol. 55, No. 4 (Mar. 1983) ; 52 p.

Marathon solves brae field's problems / W.B. Bleakley -- Dredging aids deepwater oil and gas operations / J.C.C. Hill -- Shell steps up leman activity / W.B. Bleakley -- ESP- the electrical submersible pump, part 5 / John Beavers.

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