Cover image for Secret and urgent; the story of codes and ciphers
Title:
Secret and urgent; the story of codes and ciphers
Author:
Pratt, Fletcher, 1897-1956.
Personal Author:
Publication Information:
Indianapolis ; New York : The Bobbs-Merrill Company [1939]

[©1939]
Physical Description:
282 pages ; 25 cm
Language:
English
Subject Term:

Format :
Book

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Z104 .P92 Adult Non-Fiction Central Closed Stacks-Non circulating
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