TY  - BOOK
AU  - Hopper,Earl,ed.
TI  - Readings in the Theory of Educational Systems,  
SN  - 009109230 2
U1  - 370.1 
PY  - 1971///
CY  - London
PB  - Hutchinson University Library
KW  - Education
KW  - Philosophy and theory of education
N1  - Includes appendix, bibliographical references
ER  -