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History of Codes and Ciphers in the U S During World War 1 by Wayne G. Barker Cryptanalysis of the Simple Substitution Cipher With Word Div... by Wayne G. Barker The Anatomy of Two Traitors by Wayne G. Barker Cryptograms by Wayne G. Barker Cryptanalysis of the Hagelin Cryptograph by Wayne G. Barker Cryptanalysis of the Single Columnar Transposition Cipher Wit... by Wayne G. Barker Cryptanalysis of the Simple Substitution Cipher by Wayne G. Barker Medical Schools of the World Where Instruction Is Given in En... by Wayne G. Barker Cryptanalysis of the Double Transposition Cipher by Wayne G. Barker Cryptanalysis of Shift Register Generated Stream Cipher Systems by Wayne G. Barker


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