Demography Population 30 Mathematical models 7 History 6 Methodology 6 Fertility, Human 4 Economic development 3 Mais ... Mortality 3 Population policy 3 Research 3 Economic aspects 2 Periodicals 2 Statistics 2 Birth control 1 Business cycles 1 Economic conditions 1 Families 1 Forecasting 1 Human genetics 1 Infanticide 1 Marketing research 1 Marriage 1 Political aspects 1 Population genetics 1 Population research 1 Regional planning 1 Social accounting 1 Social aspects 1 Social evolution 1 Social sciences 1 menos ...