Topic terms serve to identify the general topics, subjects or themes of a study. Many but not all metadata providers use CESSDA Topic Classification for their topic terms.
Topic
Search topics
Keywords which describe the content of the data. Many but not all metadata providers use ELSST Thesaurus for their keywords. Searchable list contains a maximum of 2000 most common keywords.
Keywords
×linguistic identity
The year(s) in which the data for the study were collected.
Collection years
19002025
The country which the data cover. Note: the filter only includes those studies where the metadata provide an ISO 3166-1 country code. Use an additional free-text search with country name for more results.
Country
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Name of the institution providing the information on the study.
Publisher
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