Hughes, Martin,  1949 May 15- <br/><br/>
Children and number :  difficulties in learning mathematics / 
Martin Hughes. 
 - Oxford [Oxfordshire], UK ;  New York, NY, USA :  B. Blackwell,  1986. 
 - xi, 195 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. [185]-189. 
<br/><br/><label>ISBN: </label>0631135790 0631135812 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Number concept in children.<br/>Mathematical ability--Study and teaching.