Exploration by geophysical methods, extraction and transport of hard rock inclusions during overburden removal : questionnaire / transmitted by the Government of Czechoslovakia.
1984
Notice détaillée
Symbole[E/ECE/]COAL/GE.5/R.31/Add.1
TitreExploration by geophysical methods, extraction and transport of hard rock inclusions during overburden removal : questionnaire / transmitted by the Government of Czechoslovakia.
AuteursCzechoslovakia
DateGeneva : UN, 20 Feb. 1984.
Description
5 p.