1968. Second Edition. 48 pages. This is an ex-Library book. Dust jacket covered in removable plastic wrapper over green cloth. Library copy, with expected inserts and inscriptions. Pages are bright and clear with no visible markings. Binding throughout remains firm. Notable tape staining to rear pastedown and endpaper. Boards have light edge wear with minor corner bumping. Mild crushing to spine, with occasional markings overall. Unclipped jacket has light edgewear with tears and creasing. Notable rubbing and marking all over.