Disceret mathematics 
Johnsonbaugh, Richard. 
 - Third edition. 
 -  Macmillan, Publishing Company.  1993 
 - 800 pages. 
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<br/><br/><label>ISBN: </label>0-02-360721-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer science -- Mathematics.
<br/><br/><label>Dewey Class. No.: </label>510 J62d 1993