Novak, David. <br/><br/>
Developmental mathematics /  
David Novak. 
 - 2nd ed. 
 - Massachusetts :    D.C. Heath and Co.,    1989. 
 - 1v. various pagings :    ill. ;    28 cm. 
<br/><br/>  Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0669170925 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Mathematics -- Problems, exercises, etc.
<br/><br/><label>Dewey Class. No.: </label>510