Riddle of Gravitation by Peter G. Bergmann
1969. First Edition Thus. 270 pages. Dust jacket over blue cloth. Pages are bright and clear with no visible markings. Binding throughout remains firm. Pencil inscription to front endpaper. Notable water stain to lower text block edge. Boards have light edge wear with minor corner bumping. Mild crushing to spine, with occasional markings overall. Book has forward lean. Boards are mildly warped. Unclipped jacket has light edgewear with tears and creasing. Moderate water staining to rear panel. Notable rubbing and marking all over.