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Kryptologie (HP-41 C/CV) : Chiffrierung, Textverschlüsselung, Datenschutz, Morsealphabet (Vieweg-Programmbibliothek Taschenrechner ; 7) / Helmut Alt ; Harald Schumny [Hrsg.]
(1983)
Frank Altensen
;
Helmut Alt
;
Harald Schumny
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