This guide evaluates the 669 best sci-tech reference books for pre-teens and young adults. Covered are biographical sources, directories, handbooks, manuals, textbooks, field guides, indexes, and "how-to" books. Entries are arranged by 12 subject chapters with introductory material which defines the subject and identifies the highly recommended sources necessary for any library collection. Books can be located with three special indexes: title (including main title, series title, or former title), name (authors, editors, compliers), and subject.
