The state of the environment: selected topics - 1979 : Report of the Executive Director.
1979
Files
详细记录
符号UNEP/GC/7/4
标题The state of the environment: selected topics - 1979 : Report of the Executive Director.
获取English: UNEP_GC_7_4-EN - PDF ;
日期Nairobi : UN, 30 Jan. 1979.
描述
[31] p.
备注
Concerns four topics related to the state of environment, 1979.