International classification of coal : comments on the report / prepared by the experts of the Federal Republic of Germany (COAL/R.99) ; transmitted by the Government of Poland.
1984
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رمز / رقم الاستدعاء
[E/ECE/]COAL/R.99/Add.2
العنوان
International classification of coal : comments on the report / prepared by the experts of the Federal Republic of Germany (COAL/R.99) ; transmitted by the Government of Poland.
المؤلفون
تاريخ
Geneva : UN, 13 Apr. 1984.
الوصف
3 p.