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Stamps of
Great Britain
,
Computer inside Human Head Alan Turings work on computers
design
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1 to 1 of 1
postage
1999
, Jan 12
Millennium Series 1 - The Inventors' Tale issue
unwmk
(no perf info)
-
63p
multi
Computer inside Human Head Alan Turings work on computers
1 to 1 of 1