848 pages, illustrated with black and white and colour plates The boards are rubbed; the preliminaries are stained along the outer edge as are the last six pages, back end paper and back paste down. Apart from these, the pages clean and unmarked, and the binding solid. Haire et al is the pseudonym of Arthur Koestler who"agreed to write a sex encyclopaedia to earn money to live on. It was published to great success under the title The Encyclopodia of Sexual Knowledge, under the pseudonyms of "Drs A. Costler, A. Willy, and Others" (wikipedia) The Practicve Of Sex Practice is the same book under a different title.