VGC/GC.Oxford University Press,1946.First edition-2nd reprint.Black hardback(some marks and nicks on the cover and spine,gilt lettering to the spine) in VGC, with Dj(small tears,chipped,creases and slightly tainted on the edges of the Dj cover) in good condition.Illustrated with many b/w drawings,diagrams,tables.Nice and clean pages with small foxing marks and slightly tainted on the outer edges,small foxing marks inside the first two and last two blnak pages of the book,small nicks and creases on the edges of the pages.The book is in VGC for its age with light shelf wear on the cover and Dj cover.265pp including index.Price clipped.