Equipment for exploration drilling for hard mineral resources, Seminar "Today's drilling a. coring methods", [Donetsk, 1981]
английский (eng)/Equipment for exploration drilling for hard mineral resources : Seminar "Today's drilling a. coring methods", [Donetsk, 1981] / V. A. Razorenov ; UN Econ. commiss. for Asia a. Oceania a. State comm. of the USSR for external econ. relations.Equipment for exploration drilling for hard mineral resources : Seminar "Today's drilling a. coring methods", [Donetsk, 1981] / V. A. Razorenov.Equipment for exploration drilling for hard mineral resources : Seminar "Today's drilling a. coring methods", [Donetsk, 1981].M./, 1981 ( ). - 1981. - 22 с. ; 21 см см.Equipment for exploration drilling for hard mineral resources : Seminar "Today's drilling a. coring methods", [Donetsk, 1981]. M., 1981 .162/[П131-5]/"Today's drilling and coring methods", seminar (; 1981; Donetsk)/