Greathead, Helen <br/><br/>
My Smartphone and other digital accessories 
Helen Greathead  
 - New York :  Crabtree publishing company,  2017. 
 - 32 p. : col. ill.  ; 24 cm. 
<br/><br/>
<br/><br/><label>ISBN: </label>9780778727385 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ubiquitous computing 2. Digital electronics
<br/><br/><label>Dewey Class. No.: </label>621.3845 G79897 2017