Notes: • "First published as a Beacon paperback in 1988". • Eleventh printing by the number line 99 98 97 96 12 11. • Cover illustration: Laurence Schwinger. Cover design: Joanna Steinkeller. Both credited on the back cover. • Pagination has the introduction ending on page xxvii, then one blank, then the Title page, which on a countback from the first page of the text would be page 7. This later printing may have dropped some prefatory material.