Topic 7, Economic and environmental aspects of the utilization of coal-mining and coal preparation waste : the reclamation of ground damaged by underground and opencast coal mining : summary / transmitted by the Government of Bulgaria.
1983
详细记录
符号[E/ECE/]COAL/SEM.8/R.14(Summary)
标题Topic 7, Economic and environmental aspects of the utilization of coal-mining and coal preparation waste : the reclamation of ground damaged by underground and opencast coal mining : summary / transmitted by the Government of Bulgaria.
包含
Economic and environmental aspects of the utilization of coal-mining and coal preparation waste : summary.
The reclamation of ground damaged by underground and opencast coal mining : summary.
The reclamation of ground damaged by underground and opencast coal mining : summary.
日期Geneva : UN, 30 Mar. 1983.
描述
2 p.
备注
Prepared by I. Yordanov.