Originally published in Germany, 1974. Text by Rudiger Boschmann, illustrations by Gunther Hunold - 2 of Europe's most famous sex researchers. 1st American edition 1976 from Pent-R Books - this is 1979 edition. 6" x 9" softcover with 160 pages and 140 color photos. Has been read a few times but very light wear - tight & sharp.