1. New technological solutions in underground mining
Author: [edited by] Eugeniusz J. Sobczyk, Jerzy Kicki.
Library: Center and Library of Islamic Studies in European Languages (Qom)
Subject: Mine safety, Congresses.,Mineral industries, Congresses.,Mines and mineral resources, Congresses.
2. Technical, technological and economical aspects of thin-seams coal mining
Author: [edited by] Eugeniusz J. Sobczyk, Jerzy Kicki.
Library: Center and Library of Islamic Studies in European Languages (Qom)
Subject: Mine safety, Congresses.,Mineral industries, Congresses.,Mines and mineral resources, Congresses.
