VGC.John Murray,1951.First UK edition.Blue hardback(small nicks,scratches,ink mark and light shelf wear on the cover and spine,red lettering to the spine) in VGC, no Dj cover.Illustrated with b/w photos,drawings,diagrams,tables.Nice and clean pages with small foxing marks and slightly tainted on the outer edges,previous owner's inscription and date written on the first blank page of the book,small foxing marks inside the first and last blank pages of the book.The book is in VGC for its age with light shelf wear.299pp including Appendices I to III,index.