REMOVE

1. Mining
2. Geology
3. Dowling, D.B.
4. Nathorst, A.G.
5. Hoel

WHAT

1. Atlas Map (1)
2. Physical (1)
3. World Atlas (1)

WHERE

1. Alger (Algeria) (1)
2. Algeria (1)
3. Libya (1)
4. Morocco (1)
5. Northwest Africa (1)

WHO

1. USSR (1)
2. USSR (Union of Soviet Soc … (1)

WHEN

1. 1967 (1)