Basker, S.F. <br/><br/>
<The> elements of logic / 
Stephen F. Basker 
 - 4th ed 
 - N.Y :  Mcgrow-Hill Book company ,  1985 
 - 386 p. 
<br/><br/><label>Subjects--Index Terms: </label>Logic học Nguyên lý 
<br/><br/><label>Dewey Class. No.: </label>160  / BAS 1985