Terrell, Trevor J. <br/><br/>
ZX81 user's handbook  Trevor J. Terrell and Robert J. Simpson 

 - London  Newnes Technical  1982 
 - 137p. ill. 22cm 
<br/><br/><label>ISBN: </label>0408012234 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sinclair ZX81--Handbooks, manuals, etc