Preparation of an industrial classification of medium-rank coals / transmitted by the Government of the Union of Soviet Socialist Republics.
1982
Notice détaillée
Symbole[E/ECE/]COAL/GE.3/R.49/Add.15
TitrePreparation of an industrial classification of medium-rank coals / transmitted by the Government of the Union of Soviet Socialist Republics.
AuteursUSSR
DateGeneva : UN, 26 Apr. 1982.
Description
5 p. : tables