PSI, the Keller plan handbook essays on a personalized system of instruction

PSI, the Keller plan handbook essays on a personalized system of instruction

Bibliographic Details
Main Author: Keller, Fred Simons 1889
Other Authors: Sherman, JohnGilmour 1931
Format: Book
Language:English
Published: California W.A. Benjamin c1974.
Subjects:
Individualized instruction > Addresses, essays, lectures.