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Floyd Shock

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Barnard's universal cipher code
Barnard's Universal Cipher Code [microform] For Telegraphic Communication Between Chiefs of Police, Sheriffs, Marshals and Other Peace Officers of the United States and Canada
Barnard's Universal Cipher Code [microform] For Telegraphic Communication Between Chiefs of Police, Sheriffs, Marshals and Other Peace Officers of the United States and Canada
Barnard's universal cipher code: for telegraphic communication between chiefs of police, sheriffs, marshals and other peace officers of the United States and Canada