Codes
1976
Books, Manuscripts
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Main title:
Codes / (by Ray Hemmings et al.).
Imprint:
London (etc.) : Hutchinson for Leapfrogs, 1976.
Collation:
(1),18p : ill.(some col.) ; 21 cm.
Series title:
ISBN:
0091261317
Dewey class:
001.5436
LC class:
Z104
Language:
English
Subject:
Index terms:
Codes & ciphers
BRN:
2937372