Herbert Spencer Zim
Codes and secret writing
Paperback
(Scholastic Book Services March 15, 1966)
, 11th ptg edition
A primer on codes & secret writing by Scholastic Book Services: copyright 1948, 16th printing Feb., 1975.
- Pages
- 115
- Weight
- 7.2 oz.
- Dimensions
- 7.5 x 5.1
in.