encyclopedias

A comprehensive literary survey of American literature composed of more than 1,100 signed biographical-cirtical entries.

This definitive illustrated encyclopedia covers the origin and evolution of dinosaurs, their classification - the main groups and family trees - as well as the daily details of dinosaur life.

This is an A-Z guide to major manufacturers and models of motorcycles since 1885. The text details the technical specifications of the machines and describes the key elements of their design, their performance features and their engineering standards.

13 volumns organized on the basis of occupational-interest clusters. Over 600 occupational profiles that discuss work characteristics, job entry, education and training requirements, advancement possibilities and employment outlook, and earnings and benefits.

A guide to innovations in computing, communications, biotechnology, medicine, national defense, space, education, entertainment, and the environment.

Tells the stories behind 250 medical and dental firsts and inventions, as well as the unique theories, history and people who helped to bring each discovery about.