TY  - BOOK
AU  - Parker, Ronald K.,
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 2
PY  - 1968///46
CY  - Boston
PB  - Allyn and Bacon
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Educational psychology
N1  - Includes bibliographies; 5
ER  -