International Bibliography of the Social Sciences (IBSS) Essential resource for social science and interdisciplinary research: features bibliographic information on politics, sociology, economics, and anthropology. Includes over 3 million bibliographic references to journal articles, books, reviews, and selected chapters dating back to 1951. Unique in its broad coverage of international material: incorporates over 100 languages and countries. Regularly indexes 2,800 journals, and includes some 7,000 books each year. Abstracts are provided for half of all current journal articles.