REMOVE

1. Data Visualization
2. Oil
3. Energy
4. 1937

WHAT

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

WHERE

1. Russia (2)

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 (2)