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Codes and secret writing
Herbert Spencer Zim
Paperback (Scholastic Book Services, March 15, 1966)A primer on codes & secret writing by Scholastic Book Services: copyright 1948, 16th printing Feb., 1975.
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Codes and secret writing
Herbert Spencer Zim
Hardcover (W. Morrow, March 15, 1948)None
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Codes and Secret Writing
Herbert S. Zim
Paperback (Pan Macmillan, March 15, 1977)None
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Codes and Secret Writing
Herbert Spencer Zim
Paperback (Scholastic, Jan. 15, 1978)None
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Codes and secret writing.
Herbert S. Zim
Paperback (Scholastic, Jan. 1, 1962)Scholastic 16th printing 1975 TX 164 softcover 115pp.
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Codes & Secret Writing Authorized Abridgement
Zim. Herbert
Paperback (Scholastic Book Services, March 15, 1966)Step by step explanations of how secret codes can be made
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Codes & Secret Writing
Herbert S. Zim
Paperback (Scholastic Book Services, Oct. 10, 1970)"Looking for fun? Want to mystify everybody you know? Do you need to send really private messages? Here's just the book for you".
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Codes & Secret Writing
Herbert S. Zim
Paperback (Scholastic Book Services, March 15, 1964)book
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Codes & secret writing: Authorized abridgement
Herbert Spencer Zim
Paperback (Scholastic Book Services, March 15, 1948)This is an amazing book from my childhood
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Codes & Secret Writing
Herbert S. Zim
Paperback (Scholastic Book Services, March 15, 1975)None
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Codes and secret writing
Herbert Spencer Zim
Paperback (Scholastic Book Services, March 15, 1970)None
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Codes & Secret Writing
Herbert S. Zim
Paperback (NY: Scholastic Book Services, March 15, 1966)A secret code book