Preparation of an industrial classification of medium-rank coals / transmitted by the Government of Spain.
1982
Detalles de los registros
Signatura[E/ECE/]COAL/GE.3/R.58/Add.6
TítuloPreparation of an industrial classification of medium-rank coals / transmitted by the Government of Spain.
AutoresSpain
FechaGeneva : UN, 7 Dec. 1982.
Descripción
3 p.