OFFSHORE CONTRACTOR COMPETITION TIGHTENS. = LA CONCURRENCE ENTRE LES ENTREPRENEURS DE FORAGE EN MER DEVIENT PLUS APRESHEFFER L.1976; DRILLG-D.C.W.; U.S.A.; DA. 1976; VOL. 37; NO 3; PP. 31-34 (3P.)Article

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Changes reshape the offshore industrySHEFFER, L.Drilling contractor. 1986, Vol 42, Num 1, pp 32-34, issn 0046-0702Article

NITROUS-OXIDE-INDUCED DIFFUSION HYPOXIA IN PATIENTS BREATHING SPONTANEOUSLY = HYPOXIE INDUITE PAR LE PROTOXYDE D'AZOTE CHEZ DES SUJETS RESPIRANT SPONTANEMENTSHEFFER L; STEFFENSON JL; BIRCH AA et al.1972; ANESTHESIOLOGY; U.S.A.; DA. 1972; VOL. 37; NO 4; PP. 436-439; BIBL. 10 REF.Serial Issue

Offshore to see improvement in '85SHEFFER, L. R.Drilling contractor. 1989, Vol 40, Num 11, pp 22-28, issn 0046-0702Article