1948. 17th Edition. 912 pages. No dust jacket. Blue cloth. Contains black and white illustrations. Moderate tanning, with light foxing and marking to pages. Heavy tanning to text block edges. Front endpaper is missing. Previous owner's inscriptions to half title page. Boards have moderate shelf wear, with rubbing and marking. Light bumping to corners and crushing to spine ends. Book has noticeable forward lean. Boards are slightly bowed with white dots overall.