Letcher, Piers. <br/><br/>
Screen Shot programming series zx spectrum and graphics:   step by step programming / 
By Piers Letcher 
 - 1st ed. 
 - London :  Dorling Kindersley ,  1985. 
 - 64p. ;  PB  27 cm. 
<br/><br/><label>ISBN: </label>0863181031 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Screen colours<br/>Line graphics<br/>Saving and loading displays
<br/><br/><label>Dewey Class. No.: </label>005.101   / LETP