TY  - BOOK
AU  - Osherson, Daniel N.
TI  - Logical abilities in children
SN  - 0470657243
U1  - 155.413 
PY  - 1974///
CY  - New York
PB  - John Wiley
KW  - Psychology
KW  - Child psychology
N1  - V.2 : Logical inference : underlying operations
ER  -