Added front cover and back covers from a 1978 second impression (third printing) and a 1982 fifth printing. Front cover is a cut down version from the previous printings, by Chris Achilleos and is common to both the 1978 and 1982 books.
1978 book:
Published by Universal-Tandem Publishing Co. Ltd.
1982 book;
A Target Book.
Published by the paperback division of W. H. Allen & Co. Ltd.
A Howard & Wyndham Company. (this comment is from another edition of this book)