Collects and disseminates information on plays, playwrights and theatre practitioners.

Features more than 4,300 specially commissioned and peer-reviewed articles.

Features Titanic passenger and crew biographies, pictures, exclusive research articles and ongoing discussions about the disaster.

Provides reliable information on anabaptist-related (Amish, Mennonite, Hutterite, Brethren in Christ) topics, including history, theology, biography, institutions and local congregations.

An online illustrated encyclopedia of endangered animals that strives to inform and educate children about the danger of extinction of animal species due to environmental destruction.

Provides several encyclopedia's with almanac references.

A vast library giving instant access to the most authoritative and up-to-date scholarship in your field.

Works to bring to you the renowned 1911 Edition of the Encyclopaedia Britannica.

Provides totally free access to several encyclopedias, from historical to modern.

A comprehensive plant dictionary and garden encyclopedia providing a wealth of information for home, work or school. Get instant access to growth and cultivation tips, plant care, plant photographs, illustrations and much more.

Your dynamic online resource for researching, teaching and studying in the philosophy arena and related disciplines.

Simple English version of Wikipedia. Provides articles in simple language for those who do not speak English as a first language.

A hypertext document built around a dictionary of 3600 satellites.

A comprehensive encyclopedia of mathematics with 13,000 detailed entries.