Paperback with 493 pages. 

 Not ex-library, the photos with this listing are the actual book you receive.

Please see the photo of the small but nasty looking 'bump' to the last 40 or so pages, text not affected, then the contents are very good, clean, tightly bound with no loose pages etc.  Front bottom spine corner has had a bump (see photo)  and a small amount of edge rub then the covers are good.   A good solid and square reference copy,in the UK with rapid dispatch.