TY  - BOOK
AU  - Berch,Daniel B.
AU  - Mazzocco,Michele M.M.
TI  - Why is math so hard for some children?: the nature and origins of mathematical learning difficulties and disabilities 
SN  - 9781557668646
PY  - 2007///
CY  - Baltimore, Md.
PB  - Paul H. Brookes Pub.
KW  - Learning disabilities
KW  - Education
KW  - Mathematical ability
KW  - Study and teaching
KW  - Mathematics
N1  - Includes bibliographical references and index
ER  -