1964. Reprinted. 128 pages. Pictorial dust jacket over pictorial paper covered boards. Black and white diagrams throughout. Pages remain bright and clean with minimal tanning and foxing. Binding remains firm. Boards have light shelf wear with minor corner bumping and crushing to spine ends. Unclipped jacket has light edge wear with minor chipping and creasing. Some rubbing and marking to surfaces. Spine noticeably sunned.