2
|
|
|
|
1
|
3
|
|
United States. Bureau of Mines. Branch of Africa and the Middle East. / https://id.loc.gov/authorities/names/n85198450
|
1986
|
1
|
4
|
|
|
|
1
|
5
|
|
United States. Bureau of Mines. Division of International Minerals. / https://id.loc.gov/authorities/names/n86138736
|
1991
|
1
|
6
|
|
|
|
1
|
7
|
|
United States. Bureau of Mines. Division of International Minerals. Branch of Far East and Australia / https://id.loc.gov/authorities/names/n88081151
|
1991
|
1
|
8
|
|
United States. Bureau of Mines. Division of Minerals Health and Safety Technology. / https://id.loc.gov/authorities/names/n80012160
|
1979
|
1
|
9
|
|
|
|
1
|
10
|
|
|
|
1
|
11
|
|
|
|
1
|