The ecological life zones of Puerto Rico and the U.S. Virgin Islands /

Trees for urban use in Puerto Rico and the Virgin Islands /
by: Schubert, Thomas H.
Published: (1979)

Geology and hydrogeology of the Caribbean islands aquifer system of the Commonwealth of Puerto Rico and the U.S. Virgin Islands /
Published: (2002)

Benthic habitats of Puerto Rico and the U.S. Virgin Islands /
Published: (2001)

Connectivity of tropical marine ecosystems : an overview of interdisciplinary research to understand biodiversity and trophic relationships in the Virgin Islands and Puerto Rico /
by: McClain-Counts, Jennifer
Published: (2012)

To Assist in Relieving Economic Distress in Puerto Rico and the Virgin Islands. hearings before the United States House Committee on Insular Affairs, Seventy-Eighth Congress, first session, on Oct. 1, 12, 19, 1943.
Published: (1943)

To Assist in Relieving Economic Distress in Puerto Rico and the Virgin Islands. hearings before the United States House Committee on Insular Affairs, Seventy-Eighth Congress, first session, on May 19, 20, 22, 24, 25, 1943.
Published: (1943)

Pteridophyta of Porto Rico and the Virgin Islands /
by: Maxon, William R. (William Ralph), 1877-1948
Published: (1927)

Trees of Puerto Rico and the Virgin Islands /
by: Little, Elbert L. (Elbert Luther), 1907-2004
Published: (1974)

To Assist in Relieving Economic Distress in Puerto Rico and the Virgin Islands. hearings before the United States House Committee on Insular Affairs, Seventy-Eighth Congress, second session, on May 16, 17, 1944.
Published: (1944)

Rare and endemic trees of Puerto Rico and the Virgin Islands /
by: Little, Elbert L. (Elbert Luther), 1907-2004
Published: (1980)

Seed source variation in Puerto Rico and Virgin Islands grown mahoganies /
by: Geary, T. F.
Published: (1973)

Puerto Rico and the U.S. Virgin Islands drug threat assessment.
Published: (2003)

The U.S. Caribbean region : wetlands and fish : a vital connection /
by: Delgado, Patricia
Published: (2004)

Investigation of Minimum Wages and Education in Puerto Rico and the Virgin Islands : hearings before the United States House Committee on Education and Labor, Special Investigating Subcommittee No. 3 (Education and Labor), Eighty-First Congress, first session, on Nov. 16, 18, 19, 21-23, 25, 1949.
Published: (1949)

The birds of Porto Rico and the Virgin Islands /
by: Wetmore, Alexander, 1886-1978
Published: (1927)

Arboles comunes de Puerto Rico y las Islas Vírgenes /
by: Little, Elbert L. (Elbert Luther), 1907-2004
Published: (2001)

Generalized estimates of probable maximum precipitation and rainfall-frequency data for Puerto Rico and Virgin Islands for areas to 400 square miles, durations to 24 Hours, and return periods from 1 to 100 years.
Published: (1961)

To Assist in Relieving Economic Distress in the Virgin Islands. hearings before the United States House Committee on Insular Affairs, Seventy-Eighth Congress, first session, on Oct. 21, 27, Nov. 2, 10, 17, Dec. 2, 6, 1943.
Published: (1943)

Two- to ten-day rainfall for return periods of 2 to 100 years in Puerto Rico and Virgin Islands /
by: Miller, John F. (John Frederick), 1928-
Published: (1965)

La región del Caribe Estadounidense : humedales y peces, una conexión vital.
Published: (2004)

The U.S. Caribbean region : wetlands and fish, a vital connection.
Published: (2004)

A guide to the birds of Puerto Rico and the Virgin Islands /
by: Raffaele, Herbert A.
Published: (1983)

Vines and climbing plants of Puerto Rico and the Virgin Islands /
by: Acevedo-Rodríguez, Pedro
Published: (2005)

A guide to the birds of Puerto Rico and the Virgin Islands /
by: Raffaele, Herbert A.
Published: (1983)

Geologic map index of Puerto Rico /
by: McIntosh, Willard L.
Published: (1976)

Final data report for the Vieques Island biota sampling project : Vieques Island, Puerto Rico /
Published: (2006)

FDIC state profile, Puerto Rico and the U.S. Virgin Islands.

Puerto Rico and the U.S. Virgin Islands national wildlife refuges : Puerto Rico e Islas Virgenes Americanas refugios nacionales de vida silvestre.
Published: (2002)

Arboles para uso urbano en Puerto Rico e Islas Vírgenes /
by: Schubert, Thomas H.
Published: (1985)

Minimum Wages for Puerto Rico and the Virgin Islands : hearings before the United States House Committee on Education and Labor, Eighty-Fourth Congress, first session, on Dec. 1, 2, 5, 1955.
Published: (1955)

Summary of significant floods in the United States, Puerto Rico, and the Virgin Islands, 1970 through 1989 /
by: Perry, Charles A.
Published: (2001)

Living with the Puerto Rico shore /
Published: (1995)

Authorizing Acquirement of Site on Hazzell Island, St. Thomas, Virgin Islands, for Fuel-Oil Station, etc., and Conferring Jurisdiction Under Prohibition Act upon Territorial Courts of Porto Rico : hearings before the United States House Committee on Insular Affairs, Sixty-Seventh Congress, second session, on June 6, 1922.
Published: (1922)

The status of Puerto Rico's forests, 2003 /
by: Brandeis, Thomas James
Published: (2007)

H.R. 103 and contract authority in Puerto Rico and the Virgin Islands : hearing before the Subcommittee on Hospitals and Health Care of the Committee on Veterans' Affairs, House of Representatives, Ninety-eighth Congress, first session, February 16, 1983.
Published: (1983)

Soil series of the United States, Puerto Rico, and the Virgin Islands : their taxonomic classification /
Published: (1981)