TY  - BOOK
AU  - Zubek,John P.
AU  - Solberg,P.A.
TI  - Human development
U1  - 150 
PY  - 1954///
CY  - New York
PB  - McGraw-Hill
KW  - Psychology
KW  - Developmental psychology
N1  - Bibliography: p.429-459
ER  -