1964. No Edition Stated. 414 pages. No dust jacket. This is an ex-Library book. Grey cloth. Expected library inserts, stamps and inscriptions. Includes various diagrams. Monographs in Physics and Astronomy Volume XIII. Pages have slight foxing, tanning and minor thumbing. Pencil inscriptions to front endpaper. Boards have some edge wear, with slight bumping and fraying to corners, while spine ends are moderately crushed and rubbed. Slightly scratched, rubbed and marked overall. Boards a little rubbed and marked overall.