1. Mineral exploration, mining, and processing patents, 1979
Author: Oliver S. North
Library: Central Library of Amirkabir University of Technology (Tehran)
Subject: Mines and mineral resources Patents, Prospecting Patents, Metallurgy Patents
Classification :
TN
257
.
M55
1979
2. Mineral exploration mining, and processing patents, 1980
Author: Oliver S. North
Library: Central Library of Amirkabir University of Technology (Tehran)
Subject: Mines and mineral resources Patents, Prospecting Patents, Metallurgy Patents
Classification :
TN
257
.
M55
1980
