Population Population--Statistics Population policy Fertility, Human Fertility, Human--Statistics Population--addresses, essays, lectures Demography Emigration and immigration Government policy Abortion--Government policy--Cross-cultural studies Abortion--Law and legislation--Cross-cultural studies Age distribution (Demography) Emigration and immigration law Mortality Older people--Statistics Population Growth--Technical Report Sex Distribution--Technical Report Statistics as Topic--Technical Report Age distribution (Demography)--Statistics Aged Aging Birth control Birth control--Addresses, essays, lectures Birth control--Evaluation--Methodology Census--Methodology Children Databases Economic development Economic development--Environmental aspects Elderly poor