Codes, Ciphers and Secret Writing
| Publisher | Dover Publications, Inc. |
| Publisher Series | Dover Children's Activity Books |
| About/Subject | Cryptography |
| Format | Paperback |
| Language | English |
| Location | New York, USA |
| This Edition Published | 1984-10-01 |
| Copyright | 1972 |
| Pages / Font | 96 pages |
| ISBN 10 | 0486247619 |
| ISBN 13 | 978-0486247618 |
| Notes | Age Range: 9 - 12 years Grade Level: 4 - 7 |
Added by CryptCorp · Last edited by Anaideia