A problem solving approach to mathematics 
Billstein, Rick. 
 - Fifth edition. 
 -  Addison-Wesley Pub. Co.,  1993 
 - xxii, 905 p. 
<br/><br/>
<br/><br/><label>ISBN: </label>0-201-60250-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics -- Study and teaching (Elementary)
<br/><br/><label>Dewey Class. No.: </label>372.7 B49p 1993