Discusses codes, maps, hidden messages, signals, disguises, and other secretive activities.
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The knowhow book of spycraft
by Travis, Falcon, Hindley, Judy, King, Colin
fromKnowhow books
0
Type: Book
"This book is all about keeping secrets. It shows you how to set up secret meeting places and a secret post office and how to disguise your messages. It shows you lots of secret codes and signals"--Page 2