TY  - BOOK
AU  - Johns, Ralph Leslie.
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 2
PY  - 1950///46
CY  - 
PB  - Harper
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Psychology
N1  - Includes bibliographies; 5
ER  -