Smith, Susan Sperry. <br/><br/>
Early childhood mathematics / 
Susan Sperry Smith. 
 - 4th ed. 
 - Boston :  Pearson,  c2009. 
 - xii, 276p. : ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)<br/>Mathematics--Study and teaching (Preschool)