Octavo, Duckworth, London, 1979 (first paperback edition). The 1974 first edition is both valuable and rare, as with this edition.
Edited with annotation by John Simonds and Kenneth Grant.
Full Title: “The Complete Astrological Writings, containing A Treatise on Astrology Liber 536, How Horoscopes are Faked by Cor Scorpionis, Batracophrenoboocosmomachia”.