TY  - BOOK
AU  - Mertle,J.S.
TI  - Photomechanics and printing 
U1  - 771.5 MER M  
PY  - 1969///.
CY  - Calcutta : 
PB  - Oxford and IBH Publishing Company, 
KW  - Photomechanism
KW  - Printing
ER  -