All six species of sea turtles found in U.S. waters are listed as endangered or threatened, but the exact population sizes of these species are unknown due to a lack of key information regarding birth ...

This report deals with methods of obtaining information in population censuses, on the size of the population and its principal characteristics. This is Population Studies No. 4 for the UN Department ...

The 1951 Convention and the 1969 OAU Convention provide clear refugee definitions. The fact that more than 140 countries have acceded to the 1951 Convention or its 1967 Protocol, and many of these ...

Historically, public opinion surveys have relied on the ability to adjust their datasets using a core set of demographics – sex, age, race and ethnicity, educational attainment, and geographic region ...