PSI, Keller's personalized system of instruction
Subtitle: an appraisal
By: by Bruce A. Ryan.
Publisher: American Psychological Association
Published: 1974
Place of publication: Washington
Language: eng
Number of pages: 30
Subjects: Keller, Fred Simmons, 1899-; Individualized instruction.
Notes: Bibliography: p. 23-30.
Running title: Personalized system of instruction.