Young People's Science EncyclopediaeBook - 1963-64
Nearly four-thousand alphabetically arranged topics from many areas of the biological and physical sciences. Also includes more than two hundred suggested experiments and projects.
Publisher: Chicago, Children's Press [1963-64, v.1, 1964]
Edition: Rev. ed.
Characteristics: 20 v. illus. (part col.), col. maps, ports. 26 cm
Alternative Title: Science encyclopedia