TY  - BOOK
AU  - Osherson, Daniel N.
TI  - Logical abilities in children: reasoning and concepts
SN  - 0470990090
U1  - 150 OSH/LOG 
PY  - 1976///
CY  - New Jersey
PB  - Lawrence Erlbaum Association, 
KW  - Child Development
KW  - Learning ability
KW  - Cognition (Child Psychology)
N1  - Includes bibliographies and index; V.1. Organisation of length and class concepts : empirical consequences of a piagetian. V.2. Logical inference : underlying operations.
ER  -