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The Roper Center for Public Opinion Research is one of the world's leading archives of social science data, specializing in data from surveys of public opinion. The data held by the Roper Center range from the 1930s, when survey research was in its infancy, to the present. Most of the data are from the United States, but over 100 nations are represented.
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“Peek” is a digital archive system to provide access to digitized data of Research Resource Archive, Kyoto University (KURRA). It includes various materials that were made within educational and research activities in Kyoto University. A central feature of KURRA is that it treats materials other than books and specimens: photographs, films, recordings, field books, records of research meetings, lecture notes, and manuscripts, from primary sources.