Unclassified
BATCO
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Unclassified
BATCO
British paper cryptographic system
uncommon · Q4834680
Related cards · system
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Meta topics
Amber alert
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Unclassified
Andon (manufacturing)
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Unclassified
Agnatic seniority
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Unclassified
Chord notation
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Unclassified
10–20 system (EEG)
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Unclassified
Crankcase ventilation system
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Related cards · encryption
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Concepts
Cipher
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Works
Data Encryption Standard
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Unclassified
CRM 114 (fictional device)
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Concepts
Solitaire (cipher)
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Works
Seahorse (software)
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Unclassified
Mercury (cipher machine)
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Related cards · United Kingdom
See all 187,008 Concepts
1 Undershaft
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Places
007 Stage
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Places
1 The Shambles
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Places
1 Leadenhall Street
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Meta topics
0191
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Places
1 Cabot Square
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