Lang, Kathy. <br/><br/>
Getting it done with gem / 
Kathy Lang 
 - London :  Heinemann,  1986 
 - 102 p. 
<br/><br/><label>ISBN: </label>0434910678 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer operating systems.
<br/><br/><label>LC Class. No.: </label>QA76.76.O63  / L3 1986