1. Density of population
2. Routes to the Far East
3. Populations of nations
4. World power
5. Languages
6. Western frontiers of Germany, 1:2,500,000
7. Central Europe and surrounding areaa, 1:4,000,000
8. International boundaries, 1914
9. International boundaries, Sept. 1, 1939 and spheres of influence, Dec. 1, 1939
10. types of land relief
11. January temperatures
12. July temperatures
13. Precipitation annual
14. characteristic winds
15. Mineral resources
16. Navigable waterways
17. International trade, 1936
18. Types of land use.