Report of the 13th session of the Group of Experts on Productivity and Management Problems in the Coal Industry.
1982
详细记录
符号[E/ECE/]COAL/GE.1/20
标题Report of the 13th session of the Group of Experts on Productivity and Management Problems in the Coal Industry.
日期Geneva : UN, 29 June 1983.
描述
5, [2] p.