Contemporary mathematics 2 
Roberta Chivers...et.al.]. 
 -  Holt, Rinehart and Winston, Inc.  1965 
 - 441 pages. 
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<br/><br/><label>ISBN: </label>0-03-920260-7 
<br/><br/><label>Dewey Class. No.: </label>510 H19c 1965