Reference work covering all aspects of adult development and aging.
Encyclopedia covering the history, politics, and culture of African countries.
Encyclopedia covering Christianity through its 2000-year history within a global context. Originally published 1999-2005.
Articles on issues pertaining to the full range of topics in the area of food and agricultural ethics.
Reference work covering all facets of the distinct form of dramatic theater that flourished in ancient Greece and reached its apex in Athens of the 5th century BCE.
Covers theological concepts, religious practices and rituals, and political and historical issues from the perspective of Jewish-Christian relations. Currently in pre-release format with limited entries, but when complete will contain over 200 entries.
Covers the Jews of Muslim lands particularly in the late medieval, early modern and modern periods.
Database of information on each of the named species on Earth. Includes information on ecology and evolution of the species as well as descriptive information. From a consortium of leading natural history museums and research institutions.
Authoritative encyclopedia articles by scientists covering the biological sciences.
Articles on "the relationships among human beings, their environments, and the religious dimensions of life."