Improving instruction ; supervision by principals of secondary schools /

Bibliographic Details
Main Author:	Briggs, Thomas Henry, 1877-1971
Format:	Book
Language:	English
Published:	New York : The Macmillan company, [1938]
Subjects:	School principals. School management and organization. Teaching.

Description
Physical Description:	ix, 587 pages : diagrams ; 22 cm.
Bibliography:	Includes bibliographies.