New editions of the first 3 books in the }Science Of Discworld{ series, which feature a story by Pratchett and scientific and philosophical explorations by Ian Stewart and Jack Cohen.
They tie in with the publication of the new 4th volume, }Judgement Day{..
New editions of the first 3 books in the }Science Of Discworld{ series, which feature a story by Pratchett and scientific and philosophical explorations by Ian Stewart and Jack Cohen