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
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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.
Here are entered works on fortune-telling by means of a trance induced by gazing at a crystal. Works on the use of crystals to develop psychic abilities are entered under Crystals--Psychic aspects.