TY  - BOOK
AU  - Muller,Philippe
TI  - The tasks of childhood
T2  - World university library
AV  - BF721 .M84 1969
PY  - 1969///]
CY  - New York 
PB  - McGraw-Hill 
KW  - Child development
N1  - Bibliography: p. 243-251
ER  -