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Exposure time determination in beta-radiography of watermarks
Zweeden, J. van
Beentjes, L.B.

in: Quaerendo, 12 (1982), p. 309-315, ill.


keywords:
papieronderzoek
watermerken
Nederland
20e eeuw

classification:
B: Schriftdragers, inkt
J: Bibliotheken en instellingen

signature: LHO AW.A 06b QUAE

signature: T 5925



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