Preparation of an industrial classification of medium-rank coals / transmitted by the Government of the Union of Soviet Socialist Republics.
1982
Форматы
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Полное описание
Условное обозначение
[E/ECE/]COAL/GE.3/R.49/Add.15
Заглавие
Preparation of an industrial classification of medium-rank coals / transmitted by the Government of the Union of Soviet Socialist Republics.
Авторы
Дата
Geneva : UN, 26 Apr. 1982.
Описание
5 p. : tables