London: His Majesty’s Staionery Office, 1936. 4to., pp. lxvii, 302, grey cloth, black emblem and lettering to front board and black lettering to spine, b/w plates and figures, b/w fold-out plans, folded map to rear pocket, b/w frontispiece; small ownership inscription to front paste down endpaper, toning and foxing to edges of text block, light toning and foxing to margins, occasional light cracking to inner hinge, all content firm, rubbed to extremities, cracking along rear hinge of spine from head of spine to aprox halfway down, chipping to foot of spine and light wear to corners, overall very good. No dust-jacket.