VGC. Cassell and Company,1951. First UK edition-first impression. Volume IV. Black hardback(gilt lettering to the spine, small dent and nicks on the edges of the cover and spine) with Dj(two small tears on the edges of the Dj cover, a couple of creases, chipped and nicks on the edges of the Dj cover), both in VGC. Illustrated with folded maps,maps,diagrams. Nice and clean pages but with small foxing marks and ink marks on the outer edges, a couple of small creases and nicks on the edges of the pages. The book is in VGC for its age with light shelf wear on the Dj cover.922pp including Appendices,list of maps and diagrams,index. Price un-clipped. A collectable first edition. Heavy book(1.1 Kg).Volumes II to III and also available.