SUBJECT
Population
Birth control
257
Economic conditions
191
Population policy
158
Demography
155
Statistics
152
Economic aspects
149
Fertility, Human
132
Population forecasting
103
Social conditions
100
Economic development
83
Food supply
82
Study and teaching
79
History
67
Congresses
63
Cities and towns
62
Urbanization
61
Migration, Internal
56
Housing
50
Philippines
44
Labor supply
43
Natural resources
41
Mathematical models
40
Environmental aspects
38
Poverty
36
Agriculture
35
Mortality
35
Population research
33
Human ecology
32
Statistics, Vital
31
Economic policy
30
Census
27
Demographic surveys
27
Research
27
Family planning
26
Developing countries
25
Family
23
Social aspects
22
Women
22
Emigration and immigration
21
Environmental policy
21
Population density
21
Social indicators
21
Sustainable development
21
Asia
20
Economic indicators
20
Addresses, essays, lectures
19
Demographic transition
19
Pollution
19
Education
17
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