00974cam a2200265Ii 4500001002300000003000700023005001700030007000700047008004100054040005000095020001000145020001500155020001800170035003500188050001900223082001500242100005200257245007300309250001700382260006500399300002900464650001800493856009600511856010100607codessecretwriti00zimhCaSfIA20230525155154.0cr||||800924s1948    nyua   j      000 0 eng d  aILCcILCdHDLdIXAdOCLCQdOCLCGdMTGdCaSfIA  c$1.25  a0590025058  a9780590025058  a(OCoLC)6747329z(OCoLC)752058814aZ104b.Z5 196504a652.8bZIM1 aZim, Herbert S.q(Herbert Spencer),d1909-1994.10aCodes & secret writing /h[electronic resource] cby Herbert S. Zim.  aAbridged ed.  aNew York :bScholastic Book Services,cc1948, 1975 printing.  a115 p. :bill. ;c20 cm. 0aCryptography.41uhttp://www.archive.org/details/codessecretwriti00zimhzFree eBook from the Internet Archive42uhttp://www.openlibrary.org/books/OL24203635MzAdditional information and access via Open Library