Investigate and discover
Subtitle: elementary science lessons
By: Robert B. Sund, Bill W. Tillery, Leslie W. Trowbridge.
Contributors: Tillery, Bill W., joint author.; Trowbridge, Leslie W., joint author.
Publisher: Allyn and Bacon
Published: 1975
Place of publication: Boston
Language: eng
Number of pages: 362
Subjects: Science -- Study and teaching (Elementary)