Crystals, insects, and unknown objects
Subtitle: a creative approach to the teaching of science to intermediate school children
By: [by] John McGavack, Jr. [and] Donald P. LaSalle.
Contributors: LaSalle, Donald P., joint author.
Publisher: J. Day
Published: 1971
Place of publication: New York
Language: eng
Number of pages: 272
Subjects: Science -- Study and teaching (Secondary)
Notes: Bibliography: p. 249-263.