Hirschfelder, R. <br/><br/>
Introduction to discrete mathematics / 
R. Hirschfelder, J. Hirschfelder. 
 - Pacific Grove, Calif. :  Brooks/Cole,  c1991. 
 - xvi, 535 p. :  ill. ;  24 cm. 
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<br/><br/><label>ISBN: </label>0534138969 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing--Mathematics.