. . "JUVENILE NONFICTION History." . . "Electronic books"@en . . . . . "Juvenile works" . "Juvenile works"@en . "Puerto Rico is the smallest and easternmost island in the Greater Antilles in the Caribbean Sea. In 1952, Puerto Rico became a self-governing commonwealth voluntarily associated with the United States." . "Puerto Rico is the smallest and easternmost island in the Greater Antilles in the Caribbean Sea. In 1952, Puerto Rico became a self-governing commonwealth voluntarily associated with the United States."@en . . . . . . "Puerto Rico"@en . . "Puerto Rico" . "The information-packed volumes in this series provide comprehensive overviews of each nation's people, geography, history, government, economy, and culture. Abundant full-color illustrations guide the reader on a voyage of discovery, and maps reflect current political boundaries. Written by the most experienced professors teaching world regional geography, this series meets social studies and geography curriculum standards."@en . . . "Puerto Rico" . . "Puerto Rico." .