SUBJECT
History
10
Encyclopedias and dictionaries
9
Politics and government
5
English language
4
Festivals
4
Encyclopedias
3
Natural disasters
3
Race relations
3
Rites and ceremonies
3
Science
3
Atlases
2
Civil rights
2
Civil rights movements
2
Communicable diseases
2
Dictionaries
2
Geography
2
Holidays
2
Manners and customs
2
World War, 1939-1945
2
Aboriginal Australians
1
African Americans
1
Anti-apartheid movements
1
Apartheid
1
Autonomy and independence movements
1
Avalanches
1
Birth customs
1
Blizzards
1
Cardiovascular system
1
Children
1
Climatology
1
Coming of age
1
Current events
1
Cyclones
1
Depressions, 1929
1
Digestion
1
Digestive organs
1
Droughts
1
Earthquakes
1
Economic conditions
1
Electronic encyclopedias
1
Epidemics
1
Fasts and feasts
1
Floods
1
Folklore
1
Funeral rites and ceremonies
1
Geology
1
Government relations
1
Handbooks, vade-mecums, etc
1
Harvest festivals
1
Heart
1
more ...