Honeyburn Books (UK)
1979 The Computer(How It Works)(Series 654)David Carey & James Blythe(Illust B. H. Robinson & Gerald Witcomb(Ladybird Books)
1979 The Computer(How It Works)(Series 654)David Carey & James Blythe(Illust B. H. Robinson & Gerald Witcomb(Ladybird Books)
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Updated version of the book historically interesting in the development of the computer