1952. No Edition Stated. 357 pages. This is an ex-Library book. Symposia Number VI. Blue dust jacket with lettering over cloth. B&W illustrations throughout. Clean pages with firm binding. Ex-library with usual stamps, inserts and markings. Mild wear and bumping to spine, board edges and corners, with scuffing and marking to boards. Dewy code to spine. Unclipped dust jacket. Moderate wear, tear and loss to edges and corners. Notable tanning to spine and edges. Minor soiling to DJ, with sticker to spine.