Spies in history /
Kate Walker, Elaine Argaet.
- Collingwood, ON : Saunders Book Co., 2008, c2003.
- 32 p. : ill. (some col.), col. maps, ports. (some col.) ; 28 cm.
- Spies and spying .
- Walker, Kate, 1950 Jan. 10- Spies and spying. .
Includes index. Edited by Miriana Dasovic--T.p. verso.