REMOVE

1. Data Visualization
2. Oil
3. Energy

WHAT

1. Atlas Map (4)
2. National Atlas (2)

WHERE

1. Russia (2)
2. Middle East (1)
3. Soviet Union (1)
4. Switzerland (1)

WHO

1. Gorkin, Aleksandr Fedorov … (2)
2. Motylev, V.E. (2)
3. Nauchno-izdatelskim Insti … (2)
4. Nikitin, M. V. (2)
5. Shaposhnikova, B. M. (2)

WHEN

1. 1939 (3)
2. 1937 (2)
3. 1972 (1)
4. 1978 (1)
5. 1993 (1)