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- W2807850939 abstract "The document in question was a reproduction of a 1923 document. The reproduction was allegedly made in 1946, but it was suspected to have been made at a later date by a photocopying method. A chemical analysis showed that the reproduction was not made by a carbon-based process, but by a silver-based process, such as that used to make photo-static copies. Thus the possibility that it was produced in 1946 could not be excluded. The chemistry behind the method used to distinguish the two types of reproductions is described." @default.
- W2807850939 created "2018-06-21" @default.
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- W2807850939 date "2018-08-01" @default.
- W2807850939 modified "2023-09-25" @default.
- W2807850939 title "Analysis of a questioned document printed by a silver-based process" @default.
- W2807850939 cites W642282700 @default.
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- W2807850939 doi "https://doi.org/10.1016/j.forc.2018.06.002" @default.
- W2807850939 hasPublicationYear "2018" @default.
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