An eight-volume reference set which explores many aspects of science, including sections on career opportunities pertaining to various fields of science.

An encyclopedia designed especially to meet the needs of elementary, junior high, and senior high school students.

A general elementary encyclopedia with brief illustrated articles covering an alphabetical array of topics.

Contains more than 200 highly illustrated entries that provide information about a range of science topics grouped in twelve subject areas, with charts, statist

"This set of books represents a detailed compendium of authoritative, research-based entries that define the contemporary state of knowledge on technology"--Pro