Penrose annual:   Review of the graphic arts 

 - London:   Lund Humphries,   1952 
<br/><br/> Vol. XLVI 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Photomechanical processes
<br/><br/><label>Subjects--Index Terms: </label>Graphic arts 
<br/><br/><label>Universal Decimal Class. No.: </label>R 74/76(058)  / J2