Cryptography -- Argentina -- Equipment and supplies. / https://id.loc.gov/authorities/subjects/sh85034453 https://id.loc.gov/authorities/names/n79070134-781 https://id.loc.gov/authorities/subjects/sh00005850 : Argentina.
2011
1
Cryptography -- Australia -- History. / https://id.loc.gov/authorities/subjects/sh85034453 https://id.loc.gov/authorities/names/n79021326-781 https://id.loc.gov/authorities/subjects/sh99005024
Cryptography -- Germany -- History. / https://id.loc.gov/authorities/subjects/sh85034453 https://id.loc.gov/authorities/names/n80125931-781 https://id.loc.gov/authorities/subjects/sh99005024
2006
1
Cryptography -- Great Britain -- History. / https://id.loc.gov/authorities/subjects/sh85034453 https://id.loc.gov/authorities/names/n79023147-781 https://id.loc.gov/authorities/subjects/sh99005024
Cryptography -- Handbooks, manuals, etc. / https://id.loc.gov/authorities/subjects/sh85034453 https://id.loc.gov/authorities/subjects/sh99001300 : Meyer, Carl H.
Cryptography -- Standards. / https://id.loc.gov/authorities/subjects/sh85034453 https://id.loc.gov/authorities/subjects/sh00007508 : Dent, Alexander W.
Cryptography -- Uruguay -- Equipment and supplies. / https://id.loc.gov/authorities/subjects/sh85034453 https://id.loc.gov/authorities/names/n50000647-781 https://id.loc.gov/authorities/subjects/sh00005850 : United States.