xiv, 628pp; some in-text charts. Green cloth-covered boards; brown titles on front and spine. 8vo. Slightly sun-faded spine, rubbed corners and spine ends, light wear to boards; shelf number label taped on spine. Lender's rubber stamp on fore and bottom text block edges; all edges just starting to tan; lender's stamps, security device and markings on endpapers and title page; volume shaken. Otherwise, internally neat, clean and bright.