1. Excavation of mine openings
Author: Onika, Dmitrii Grigorevich
Library: Central Library and Documents Center of Industrial University of Khaje Nasiredin Toosi (Tehran)
Subject: ، Shaft sinking,، Coal mines and mining
Classification :
TN
283
.
O513
2. Excavation of mine openings
Author: ONIKA,DMITRU GRIGOREVICH
Library: Central Library of Amirkabir University of Technology (Tehran)
Subject: SHAFT SINKING , COAL MINES AND MINING
Classification :
TN
283
.
O55
1972
