TY  - BOOK
AU  - Peterson,Harvey A.
AU  - Marzolf, Stanley S. 
AU  - Bayley, Nancy 
TI  - Educational psychology / 
U1  - 370.15 
PY  - 1948///
CY  - New York
PB  - Harcourt, Brace, 
KW  - Educational psychology
ER  -