GC.Sir Issac Pitman and Sons,1941.Reprinted edition.Large format green hardback(some marks,foxing marks,dents and nicks on the cover and spine) in GC, no Dj.Illustrated with a diagram.Clean pages but aged and tainted on the outer edges,owner's name and stamp inside the first blank page of the book,some foxing marks,creases and nicks on the edges of the pages.The book is in GC for its age with some shelf wear.35pp.