REMOVE

1. Puzzle Map
2. Fremin, A.R.
3. Logerot
4. 1850

WHAT

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

WHERE

1. Chad (1)
2. Egypt (1)
3. Niger (1)
4. Northeast Africa (1)
5. Sudan (1)

WHO

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

WHEN

1. 1967 (1)