Analysis of the development of concentration indices at faces in the Ostrava-Karviná coalfield for the period 1981-1982 : information / transmitted by the Government of Czechoslovakia.
1983
Notice détaillée
Symbole[E/ECE/]COAL/GE.1/R.54/Add.2
TitreAnalysis of the development of concentration indices at faces in the Ostrava-Karviná coalfield for the period 1981-1982 : information / transmitted by the Government of Czechoslovakia.
AuteursCzechoslovakia
DateGeneva : UN, 20 May 1983.
Description
3 p. : tables