1955. Revised Edition. 601 pages. No dust jacket. Green cloth covered boards. Pages with some foxing and tanning, particularly to endpapers and textblock edges. Binding remains firm. Some page corners folded. Minor pencil inscriptions to endpapers. Boards have moderate shelf wear with mild bumping and fraying to corners and crushing and fraying to spine ends. All surfaces tanned and sunned, particularly spine. Gilt lettering is dulled.