IBSS: International Bibliography of the Social Sciences (ProQuest) This link opens in a new windowThis database indexes journal articles, book chapters, reviews, and books in anthropology, economics, political science, and sociology. Searches can be done with disciplines (e.g., anthropology) as a subject heading and with limits to particular languages (e.g., English) and source types (e.g., books; scholarly journals). Its retrospective reach is one of its most valuable features, as it began at least 15 years earlier than the standard print anthropology indexes, although now Anthropology Plus is a strong rival in retrospective coverage because of its inclusion of much material from the Peabody (Tozzer Library) print catalogues.