00916nam0-22003131i-450-99000035655040332120001010000035655FED01000035655(Aleph)000035655FED0100003565520001010d--------km-y0itay50------baitay-------001yyAUTOMATIC control of drilling jumbosBritish Coal CorporationLuxembourgCEC1990VI,96 pp. ill. 30 cmEUR 12511 ENin testa al front.: Commission of the E uropean Communities - technical coal rese archTechnical Coal ResearchBritish Coal CorporationCommissione europeaITUNINARICAUNIMARCBK99000035655040332104 252-32DIC INGR.1352DINCHDINCHUNINAING01