Clase and Periódica  (ClasePeriodica)

Index of Latin American journals in the sciences and humanities

Why select this database?

  • CLASE indexes documents published in Latin American journals specializing in the social sciences and humanities.
  • PERIóDICA covers journals specializing in science and technology.
  • Offer access to more than 400,000 bibliographic citations from documents published in 2,600 scholarly journals published in the Spanish, Portuguese, French and English languages.
  • Contain information from articles, essays, book reviews, monographs, conference proceedings, technical reports, interviews and brief notes published in journals edited in 24 different countries of Latin America and the Caribbean, as well as from publications that focus on Pan-American issues.
Database details
agricultural sciences engineering medicine
anthropology exact sciences philosophy
arts foreign affairs physics
biology geosciences politics
chemistry history psychology
communication science law religion
demography library and information science sociology
economics linguistics and literature  
education management and accounting  

More than 2,700 journals

Number of records Over 455,000
Dates covered Clase: 1975 to present

Periódica: 1978 to present
Updated Quarterly
Producer information

Universidad Nacional Autonoma de Mexico (UNAM)

Departamento de Bibliografía Latinoamericana

Anexo de la Dirección General de Bibliotecas (antes CICH), UNAM

Circuito de la Investigación Científica, Ciudad Universitaria

04510 México, D.F., MEXICO

Apdo. postal 70-392

Phone:(5255) 5622-3956

Fax: (5255) 5550-8068



Note: Links are available in the records to the Document Delivery Service Center. Please contact the Service Center directly with any requests for information or questions.

Phone: (5255) 5622-3956

Fax: (5255) 5550-8068




Copyright © UNAM. All Rights Reserved.

Index labels and examples of an expert search in ClasePeriodica

Use a colon after an index label (for example, au:) when you are not certain of your search terms. Use an equal sign after an index label (au=) for an exact match search. You can search with an index label from any search screen. The information you type overrides any default menu selections. The following examples show sample rather than actual searches.

Search indexes Labels Examples
Keyword kw: absoluta and efecto

[keyword searches the Source Phrase, Subject, and Title indexes]
Abstract ab: escala
Accession number no: CLA0001234
Article type phrase at= articulo

[use to limit other search terms;browse index for available article types]
Author au: rodriguez
Author phrase au= rodriguez alvaro

[last name first]
Database name phrase ds= clase

Descriptor de: salud
Descriptor phrase de= salud publica
First page pg: 2
Identifier id: logica
Issue is: 7
Language phrase ln= ingles
Publication date pd: 2002

[browse index for date formats]
Source so: gaceta
Source phrase so= gaceta de economia
Standard number sn: 0325-1926
Subject su: flexibilidad
Subject phrase su= flexibilidad laboral
Title ti: formacao
Title phrase ti= formacao dos compostos no portugues
Volume vo: 49
Year yr: 1999
Year 2 yy: 2001