Preparation of a subclassification of medium-rank coals : proposals concerning the preparation of a "classification of coals based on genetic and technological parameters" / transmitted by the Secretariat of the Council for Mutual Economic Assistance.
1983
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Details
Symbol
[E/ECE/]COAL/GE.3/R.59/Add.1
Title
Preparation of a subclassification of medium-rank coals : proposals concerning the preparation of a "classification of coals based on genetic and technological parameters" / transmitted by the Secretariat of the Council for Mutual Economic Assistance.
Authors
Date
Geneva : UN, 4 Feb. 1983.
Description
5 p. : tables