Preparation of a subclassification of medium-rank coals : consolidated report / transmitted by the Government of the Federal Republic of Germany.
1982
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Полное описание
Условное обозначение
[E/ECE/]COAL/GE.3/R.59
Заглавие
Preparation of a subclassification of medium-rank coals : consolidated report / transmitted by the Government of the Federal Republic of Germany.
Авторы
Дата
Geneva : UN, 28 Dec. 1982.
Описание
16, [2] p. : charts, tables.