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- Block diagrams--Belgium1
- Block diagrams--France1
- Block diagrams--Germany--Rhineland1
- Boundaries--Balkan Peninsula--Maps1
- Boundaries--Balkan Peninsula--Russo-Turkish War, 1877-18781
- Boundaries--Europe, Central--19193
- Boundaries--Europe, Central--Maps1
- Boundaries--Europe, Eastern--Maps1
- Boundaries--Europe, Eastern--Russo-Turkish War, 1877-18781
- Canals--Florida--Maps1
- Coal mines and mining--Canada--Maps1
- Coal mines and mining--Northwestern States--Maps1
- Coal--Texas--Maps1
- Coals--Wyoming--Maps1
- Coasts--Newfoundland and Labrador--Newfoundland, Island of--Maps1
- Ethnology--Balkan Peninsula--Maps1
- Ethnology--Balkan Peninsula--World War, 1914-19183
- Ethnology--Caucasus--Maps1
- Ethnology--Europe, Eastern--Maps1
- Ethnology--Europe, Eastern--World War, 1914-19183