Math matters, book 1 : an integrated approach 
Lynch, Chicha. 
 -  South-Western Educational Publishing.  1998 
 - xxii, 611, EP1-EP50 pages. 
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<br/><br/><label>ISBN: </label>0-538-68107-1 
<br/><br/><label>Dewey Class. No.: </label>510 L99m 1998