State certification as a factor in the training of elementary teachers-in-service ...
By: [by] William Allison Yeager.
Published: 1929
Place of publication: Philadelphia
Language: eng
Number of pages: 350
Subjects: Teachers -- Pennsylvania.; Teachers -- Training of -- Pennsylvania.
Other titles: Certification, State.
Notes: Bibliography: p. 330-332.
Thesis (Ph. D.)--University of Pennsylvania, 1929.