250pp. Red cloth-covered boards, gilt titles on spine, numerous black and white diagrams. 8vo. Boards lightly soiled, two small indentations bottom front corner, cloth torn; extremities rubbed, cloth worn through; shelf number sticker at spine heel. Text block edges starting to tan. Lender's stamps, and markings on front endpapers and copyright page. Some pencilled notes, smudge on page 41. Otherwise, internally neat, clean, bright and tight.
