Optical Masers by O.S.Heavens
1964. First Edition. 103 pages. Illustrated dust jacket over blue cloth boards. Clean pages with light tanning and mild foxing throughout. Pencil and pen inscription to front free endpaper. Bookseller sticker stuck to front pastedown. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Clipped jacket. Panels and spine have light edgewear with tears and creases. Moderate tanning and wear marks to flaps, panels and spine.