SUBJECT
History
79
Economics
39
History and criticism
28
Politics and government
27
Economic conditions
22
Fertility, Human
22
Economic policy
15
Population
15
Commerce
14
Management
14
Economic aspects
13
Labor and laboring classes
13
Money
12
Migration, Internal
11
English literature
10
Music
10
Philippines
10
Value
10
Banks and banking
9
Description and travel
9
Mathematical models
9
Business
8
Environmental aspects
8
Ethnology
8
Foreign exchange
8
Hist
8
Hotels, taverns, etc
8
Social life and customs
8
Trade-unions
8
Agriculture
7
Children
7
Commercial policy
7
Currency question
7
Economics, Mathematical
7
Education
7
Energy policy
7
English poetry
7
Finance
7
Hist. & crit
7
Measurement
7
Mortality
7
Statistics, Vital
7
Cities and towns
6
Comm
6
Economic development
6
Exports
6
Foreign relations
6
Industrial relations
6
Personnel management
6
Population increase
6
more ...