Programme of the 7th session and study tour : Economic Commission for Europe, Coal Committee, Meeting of Directors of National Mining Research Institutes, 7th session, 14-18 May 1984, Varna, Bulgaria.
1983
تفصيلات التسجيلة (السجل)
رمز / رقم الاستدعاء[E/ECE/]COAL/GE.4/11/Add.1
العنوانProgramme of the 7th session and study tour : Economic Commission for Europe, Coal Committee, Meeting of Directors of National Mining Research Institutes, 7th session, 14-18 May 1984, Varna, Bulgaria.
تاريخGeneva : UN, 28 Dec. 1983.
الوصف
3, [3] p.