Exploration by geophysical methods, extraction and transport of hard rock inclusions during overburden removal : replies to the questionnaire / transmitted by the Government of Czechoslovakia.
1984
شكل
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رمز / رقم الاستدعاء
[E/ECE/]COAL/GE.5/R.31/Add.5
العنوان
Exploration by geophysical methods, extraction and transport of hard rock inclusions during overburden removal : replies to the questionnaire / transmitted by the Government of Czechoslovakia.
المؤلفون
تاريخ
Geneva : UN, 19 Sept. 1984.
الوصف
14, 1, 1 p. : diagrams, tables