Research and development on safety in mines : replies to the questionnaire / transmitted by the Government of Hungary.
1993
详细记录
符号[E/ECE/]ENERGY/WP.1/GE.1/R.7/Add.4
标题Research and development on safety in mines : replies to the questionnaire / transmitted by the Government of Hungary.
作者Hungary
日期Geneva : [UN], 18 June 1993.
描述
4 p.