No Edition Remarks. 258 pages. No dust jacket. Red cloth. French text. Title: Compte-Rendus du Premier Congres Internantional de Radiotelluristes et Sourciers. Pages are moderately tanned and foxed throughout. Thumb-marking present. Previous owner's inscription to front free endpaper. Some creasing to gutter. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Soft crushing to spine ends. Noticeable sunning to spine and edges. Light marks to boards.