The Ontario public school hygiene
By: by A.P. Knight
Edition: Revised edition.
Series: Ontario textbook collection (University of Western Ontario)
Publisher: Copp, Clark
Published: 1920
Place of publication: Toronto
Language: eng
Number of pages: 234
Copyright date: 1919
Notes: "Authorized by the Minister of Education for Ontario for use in forms IV and V of public schools" -- t.p.