Population Population policy Population--Statistics Birth control Emigration and immigration Demography Fertility, Human Age distribution (Demography) Contraception Economic development Fertility, Human--Statistics Government policy Population--addresses, essays, lectures Population forecasting Population forecasting--Statistics Study and teaching AIDS (Disease) Abortion Abortion--Government policy--Cross-cultural studies Abortion--Law and legislation--Cross-cultural studies Age distribution (Demography)--Statistics Aged Aging Asia Birth control--Developing countries Children Emigration and immigration law Housing India--Population policy Karachi--Population