1962. First Edition. 210 pages. Tanned dust jacket over red cloth with gilt lettering to spine. Part of the International Library of Philosophy and Scientific Method series. Pages are lightly tanned with mild foxing throughout. Binding remains firm. Moderate cracking to gutters. Heavy pen inscription and underlining throughout. Previous owner's inscription to front free end paper. Small liquid stain to page 18. Boards have light shelf-wear with corner bumping and rubbing. Noticeable staining to front board. Gilt lettering is bright and clear. Small indentation to rear board and small brown mark to front board. Visible crushing and sunning to spine and edges. Unclipped jacket has moderate edgewear with some loss to spine ends, tears, chips, and creasing. Minimal foxing. Slight tanning to spine. Red stain line on rear. Notable staining all over.