Pettofrezzo, Anthony J. <br/><br/>
Elements of finite mathematics 
by A. J. Pettofrezzo 
 - Belmont, Ca. :  Wadsworth Publishing Co,  1974 
 - ix, 397 p. :  ill. ;  25 cm. 
<br/><br/><label>ISBN: </label>0534003044 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics