Hydrologic study. Western Division, South Coast Irrigation District for Puerto Rico Water Resources Authority,

Mode of access: Internet.

Aerial odyssey: Cuba, Haiti, Dominican republic, Porto Rico, Virgin islands, the Lesser Antilles, Trinidad, the Guianas, Venezuela, Colombia, Panama, Costa Rica, Nicaragua, Salvador, Honduras, Guatemala and Mexico,

Maps on lining-papers.

Prehistoria de Puerto Rico

Mode of access: Internet.

La isla de Puerto-Rico (primera parte) : bosquejo histórico, desde la conquista hasta principios de 1891 /

"Apéndice: Organización política, económica y administrativa de Puerto Rico. Legislación vigente en 1891": p. [2-5] at end.

Parnaso antillano : compilación completa de los mejores poetas de Cuba, Puerto Rico y Santo Domingo /

Mode of access: Internet.

Puerto Rico: su ambiente geográfico; manual de geografía de Puerto Rico para séptimo grado

Includes bibliographies.

Indice de precios al consumidor para familias obreras en Puerto Rico. Consumer price index for wage earners' families in Puerto Rico. Average indexes for fiscal years ...

Description based on: 1965 y 1966.

Report on surveys, research projects, investigations and other organized fact-gathering activities of the Government of Puerto Rico.

Mode of access: Internet.

Status of Puerto Rico : report of the United States-Puerto Rico Commission on the Status of Puerto Rico, August, 1966.

Mode of access: Internet.

Report of the Board of Commissioners of Agriculture of Porto Rico for the period from ...

At head of title: Government of Porto Rico, Board of Commissioners of Agriculture.

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

Summary in Spanish.

Revista de agricultura de Puerto Rico.

Official publication of the Dept. of Agriculture and Labor, 1918-Feb. 1931; of the Dept. of Agriculture and Commerce, Mar. 1931- ; of the Dept. of Agriculture, 19 -

Compendio histórico de la vida,

Mode of access: Internet.

Novísimo diccionario geográfico, histórico, pintoresco universal ; descripcion física, histórica, política, comercial, estadística, industrial, científica, literaria, artística, religiosa, moral, etc. de todas las partes del mundo ...

Mode of access: Internet.

Indice de precios al consumidor en Puerto Rico. Consumer price index in Puerto Rico. All families, wage earners' families. Average indexes for fiscal year ...

Mode of access: Internet.