United Nations International Framework Classification for Reserves/Resources : Solid Fuels and Mineral Commodities : executive summary / finalized and submitted by the United Nations Task Force.
1997
详细记录
符号[E/ECE/]ENERGY/WP.1/R.70/Add.1
标题United Nations International Framework Classification for Reserves/Resources : Solid Fuels and Mineral Commodities : executive summary / finalized and submitted by the United Nations Task Force.
日期Geneva : UN, 17 Feb. 1997.
描述
9 p. : charts, tables