1954. Sixth edition. 148 pages. This is an ex-Library book. Cream jacket over brown cloth. Expected library inserts, stamps and inscriptions. Pages have slight foxing, tanning and minor thumbing. Endpapers have strips of tanning caused by jacket. Boards have some moderate edge wear, with slight bumping to corners and minor bumping to spine ends. Unclipped jacket has some edgewear with chips, tears and creasing. Spine is noticeably sunned and heavily rubbed. Jacket is slightly rubbed and marked overall.