O'Neill, Robert. <br/><br/>
Kernel two. :  Students' book. 

 - 123 p. +  7 cassette tapes. 
<br/><br/><label>ISBN: </label>0582516420 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Textbooks for foreign speakers.
<br/><br/><label>Dewey Class. No.: </label>428.24