TY  - BOOK
AU  - Werner,Heinz
TI  - Comparative psychology of mental development  / 
U1  - 156 WER 
PY  - 1948/// , repr. 1957
CY  - New York : 
PB  - International Universities Press, 
KW  - Psychology, Comparative
N1  -  Includes bibliographical references (p. 507-555) and index
ER  -