Paperback. Pp.177-263 (i.e., 86p.), presswork on semi-coated alkaline paperstock illustrated with b&w site photos, line maps and diagrams. Original issue in plain printed 10x6.5 inch journal wraps. Head of spine has a half-inch chip, margin of front cover a quarter-inch closed tear, otherwise mild general edgewear; clean, untoned and unmarked within, a good copy.