9474
Accession Number
1483
Title Of Article Chaper
The investigation of suspect receipts by electron radiography
Title Of Journal Book
X-Ray Focus
Literature Level
Analytic
Abstract
There are three X-ray methods used for the detection of stamp irregularities and watermarks: The first is straight forward radiography by low voltage; the second is auto-electronography, and the third is electron radiography.
Keywords
watermarks;paper;stamps
pub_id
9474