REMOVE

1. Data Visualization
2. 1920

WHAT

1. Administrative and politi … (1)
2. Agriculture (1)
3. Atlas Map (10)
4. Commerce; Economics (4)
5. Communications (1)
6. Diagram (2)
7. Energy (1)
8. Ethnography/Nationality/R … (1)
9. Food (1)
10. Historical (2)
11. Industry (1)
12. Mining (1)
13. Population (4)
14. School Atlas (8)
15. Separate Map (1)
16. Statistical (2)
17. Statistical Atlas (2)
18. Thematic (1)
19. Transportation (1)
20. World Atlas (10)

WHERE

1. World (9)
2. Canada (1)
3. Central America (1)
4. India (1)
5. Mexico (1)

WHO

1. Baransky, Nikolay Nikolay … (8)
2. Kamenetsky, Vladimir Alex … (8)
3. Silishchensky, Mitrofan I … (8)
4. Sovetskaya Entsiklopediya (8)
5. Gosudarst Kartografiya (7)

WHEN

1. 1902 (8)
2. 1930 (2)