In-service education of teachers ...
By: Dr. Lester K. Ade, superintendent of public instruction.  Commonwealth of Pennsylvania, Department of public instruction, Harrisburg, 1939.
Contributors: Klonower, Henry, 1888-; Kriner, Harry Luther.; Williams, Clarence Oscar, 1895-
Series: Bulletin; [n.s.] 155
Publisher: Dunlap printing co.
Published: 1939
Place of publication: [Philadelphia
Language: eng
Number of pages: 23
Subjects: Teachers -- Training of -- Pennsylvania.
Notes: "Selected bibliography": p. 23.
Dr. Henry Klonower, Dr. Henry L. Kriner and Dr. C.O. Williams. cf. Foreword.