TY  - BOOK
AU  - Hughes,Martin
TI  - Children and number: difficulties in learning mathematics 
SN  - 0631135790
PY  - 1986///
CY  - Oxford [Oxfordshire], UK, New York, NY, USA
PB  - B. Blackwell
KW  - Number concept in children
KW  - Mathematical ability
KW  - Study and teaching
N1  - Includes index; Bibliography: p. [185]-189
ER  -