Investigate and discover : elementary science lessons /

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Bibliographic Details
Main Author: Sund, Robert B.
Other Authors: Tillery, Bill W. (joint author.), Trowbridge, Leslie W. (joint author.)
Format: Book
Language:English
Published: Boston : Allyn and Bacon, [1975]
Subjects:
Description
Physical Description:xxii, 362 p. : ill. ; 23 cm.