• 2 Map Library (Robinson)
• 1 Steenbock Library

• 7 Economic conditions
• 3 Administrative and political divisions
• 3 Land use
• 2 Languages
• 2 Phytogeography
• 1 Ethnology
• 1 History
• 1 Puerto Ricans
• 1 Remote sensing
• 1 Social conditions
• 1 Statistics

• 4 United States. Central Intelligence Agency
• 1 Boswell, Thomas D
• 1 Cruz Báez, Angel David
• 1 Institut belge d'information et de documentation
• 1 National Geographic Society (U.S.). Cartographic Division
• 1 Shupe, John F
• 1 Suominen-Summerall, Sally
• 1 Willy Rousseau et Fils

• 7 English
• 1 Spanish

• 1 Belgium
• 1 Europe
• 1 European Economic Community countries
• 1 Iceland
• 1 Indonesia
• 1 Netherlands
• 1 Puerto Rico
• 1 United States
• 1 Uruguay

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