1951. 5th Edition. 671 pages. No dust jacket. This is an ex-Library book. Red cloth. Library copy, with expected inserts and inscriptions. Black and white illustrations throughout. Severe cracking to hinges causing boards to be loose. Pages and illustrations are lightly tanned throughout. Water staining to some pages, text remains unaffected. Boards have moderate shelf-wear with bumping to corners and rubbing to surfaces. Slight crushing to spine ends. White marking to front board. Wear marks overall.