TY  - BOOK
AU  - Delafons, Allan (Ed.)
TI  - Penrose annual: : Review of the graphic arts
PY  - 1958///
CY  - London: 
PB  - Lund Humphries, 
KW  - Graphic arts
KW  - Photomechanical processes	
N1  - Vol. 52
ER  -