Psi, the Keller Plan Handbook: Essays on a Personalized System of Instruction (Benjamin Psi Series)

Instruction

by Fred Simmons Keller

Paperback

ISBN: 978-0-8053-5236-8

ISBN-10: 0-8053-5236-8

W. A. Benjamin Advanced Bk Program · 1974
See also:
1974PaperbackPSI, the Keller plan handbook: Essays on a personalized system of instruction (The Benjamin PSI series)