Online science tome covering subjects such as biology and chemistry.

Provides information such as crime and method of capital punishment. Offered in chronological order from 1100AD until 1964.

Thorough coverage of present and past theater news and productions.

Offers articles on management methodology.

Motorcycling information, repair manuals, technical data, and useful statistics organized by manufacturer. Completely searchable and easy to use.

Over 6,000 entries on mythology, folklore, and legend. Includes some images and stories.

Originally commissioned and peer reviewed articles across the life sciences. Online encyclopedia requires paid subscription.

Open access encyclopaedia, based on Kluwer edition of 2002.

Offers articles including the basics, the law and maintenance. User maintained.

A database of information about killers. Features males and females, searchable by country or name.

Photographs and information about Soviet, German and US armoured vehicles used in the 1939-1945 conflict.

Specializing in military vehicles from 1915-2015. Information, photographs and video for each vehicle which includes tank destroyers and anti-aircraft vehicles.