370pp, in-text black and white graphs and photographs. Pictorial light card covers. 8vo. Sun-faded spine with two reader's spine, shelf number taped to spine; light chipping to edges and wear to covers, corners curling. Text block edges just starting to tan. Lender's stamps, security device and markings inside covers and title pages; pages just starting to age. Otherwise, internally neat, clean and tight, barring pencilled under-lining for Foreword.
