Technical progress in the mechanization of roadway drivage in coal and stone increase in the share of roadways driven by heading machines / transmitted by the Government of the Federal Republic of Germany.
1983
Details
Symbol[E/ECE/]COAL/GE.1/R.50/Add.3
TitleTechnical progress in the mechanization of roadway drivage in coal and stone increase in the share of roadways driven by heading machines / transmitted by the Government of the Federal Republic of Germany.
AuthorsGermany, Federal Republic of
DateGeneva : UN, 20 Apr. 1983.
Description
9 p.