VGC.Pelham Books,1985.First paperback edition-first impression.Large format paperback(small nicks and crease on the cover and spine) in VGC.Illustrated with many b/w photos,drawings,maps,diagrams,plans.Nice and clean pages with two small marks on the outer edges,a couple of small nicks and creases on the edges of the pages,previous owner's name written inside the edge of the front cover.352pp including Appendix,glossary of terms,index.Heavy book.