Understanding why
By: by Thomas I. Dowling...et al. ;  edited by M. Hallman, Ruth Fusee Hamilton
Contributors: Hallman, Maynard.; Hamilton, Ruth Fusee
Edition: Cdn. ed.
Series: Understanding science
Publisher: J.C. Winston
Published: 1952
Place of publication: Toronto
Language: eng
Number of pages: 380
Subjects: Science
Notes: Authorized: 1952/53-1963.

Junior Division.

OTC