Maloney, Roy T <br/><br/>
Portable microvisual systems 

 - USA:   Lederer,   1966 
 - 125p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information science
<br/><br/><label>Universal Decimal Class. No.: </label>D 778.14(02)  / K6