TY  - BOOK
AU  - White, Mary Alice.
AU  - Duker, Jan,
ED  - 
ED  - 
ED  - 
ED  - 
TI  - : a conceptual and empirical approach 
SN  - 0030802091 (hardbound)
SN  - 2
PY  - 1973///.46
CY  - New York
PB  - Holt, Rinehart and Winston
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Education
KW  - sears0
N1  - Includes bibliographical references and index; 5
ER  -