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ICPSR

Provides social science data; available as data files for use with statistical software such as SAS, SPSS, and Stata.

International Encyclopedia of Organization Studies

Provides a description of the field, spanning individual, organizational, societal, and cultural perspective in a cross-disciplinary manner, about a range of important topics from the unique perspective of organization studies with extensive international representation.

International Music Score Library Project

The International Music Score Library Project (IMSLP) is a project for the creation of a virtual library of music scores and recordings. The library consists mainly of scans of old musical editions out of copyright. In addition, it admits scores by contemporary composers who wish to share their music with the world by releasing it under a Creative Commons license. It also includes included public domain and licensed sound recordings.

IPA Source

Online since 2003, IPA Source is the web's largest library of International Phonetic Alphabet (IPA) transcriptions and literal translations of opera arias and art song texts. Now with over 7075 texts including 1216 aria texts.