Users can link to medicaljournals available on the Internet. UnCover is a database of biblio graphic citations for articles from 17,000 multidisciplinaryjournals. Cita tions for more than 7 million articles published since the fall of 1988 are available, including many in population and related fields. The Census Bureau's International Data Base provides a variety of country level data for most countries, including population by age and sex, vital rates, infant mortality, life tables, fertility, child survival, migration, marital status, family planning, ethnicity, religion, lan guage, literacy, labor force, employ ment, and income. Data cover the years 1950 to the present, and projections are made up to 2050.
Users can create population pyramids for each country.
World Population Data Sheet includes de mographic indicators for the world, world regions, and more than 190 countries. This Web site is an important source of information on fertility, knowledge and use of family planning, maternal and child health, and house hold living conditions in developing countries. Users may download data from the surveys after registering. The HSRs are updated annu ally, but the CHPs are no longer pro duced or updated. Here users can access information on the global envi ronment and state of natural resources, the urban environment, basic economic indicators, and population.