Sphere (UK) published two editions of The Astounding/Analog Reader in 1973 - Book One and Book Two. Book One is not, however the same as the US edition, titled The Astounding/Analog Reader: Volume 1 (published in 1972 by Doubleday, New York). Although related by their connection to the Astounding and Analog magazines and published with similar titles, the UK and US publications comprise different content.
* Contents derived from the London,
United Kingdom (UK),
Western Europe,Europe,:Sphere,1973 version. Please note that other versions/publications may contain different contents. See the Publication Details.
'"Giant Killer" is a closed universe story wherein the characters (or at least some of them) do not realize that their environment constitutes only a small, confined space. It is arguably his finest work of science fiction'. (Isaac Asimov, ctd. www.bertramchandler.com)