The spelling of English by Porto Rican pupils,

Mode of access: Internet.

Public education in Puerto Rico,

"Issued by the United States Department of the Interior, Office of Education. Harold L. Ickes is Secretary of the Interior and George F. Zook is Commissioner of Education. Katherine M. Cook ... is chief of the Division of Special Problems."--Verso of t.-p.

The Porto Rico school review. La revista escolar de Puerto Rico.

Mode of access: Internet.

1980 census of population and housing.

Supercedes preliminary counts published with title: 1980 census of population and housing: preliminary population and housing unit counts.

Data pertinent to the establishment of minimum wage rates under the Fair labor standards act for employment newly covered by the amendments of 1966 in educational institutions in Puerto Rico /

"WH67-418."

Decretos estableciendo el régimen autonómico en las islas de Cuba y Puerto Rico.

"Edición oficial"

La historia documental crítica; exámen de la Historia del puerto de Buenos Aires por D. Eduardo Madero,

"De la Revista del Museo de La Plata, tomo V, pag. 3 y siquientes."

Ceremonia inaugural de las obras del puerto de Montevideo

Mode of access: Internet.

Finances of the Commonwealth of Puerto Rico.

Vol. 4, no. 6 of Census of governments, issued by the U.S. Bureau of the Census, 1973-1975.

Ferrocarril á Puerto Pando; petición para el estudio de una linea central por la quebrada de Palca y Lambate.

Cover title.

Ferrocarril á Puerto Pando /

At head of title: Sociedad Propietarios de Yungas.

Informe presentado á la Compañía sobre el ferro-carril á Puerto Pando /

At head of title: The Bolivian Rubber & General Enterprice [sic] Ltd.

Repertorio del convenio comercial entre España y los Estados Unidos aplicable a las islas de Cuba y Puerto-Rico.

Mode of access: Internet.

Data pertinent to the establishment of minimum wage rates under the Fair labor standards act for newly covered employment in retail trade (including food service employees in retail establishments) in Puerto Rico /

"WH67-300."

Data pertinent to the establishment of minimum wage rates under the Fair labor standards act for employment in other newly covered activities industry in Puerto Rico /

"WH67-381."