TY  - RPRT
TI  - Performance of cancellation inks on partially tagged gravure postage stamps 
AU  - Graminski, E L
AU  - Brockman, M R
PY  - 1973
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 73-194
DO  - 10.6028/NBS.IR.73-194
ER  -