Cambridge: University Press, 1926. First Edition. hardcover. xi + 233pp., 8vo, original green cloth; front cover rubbed. Cambridge: University Press, 1926. First Edition. Very good (+). very good(+).
This book opens with an historical account of the quantum theory from its inception by Planck, and follows with a full treatment of the dynamical theory evolved by Bohr and his school to explain the phenomena of line spectra.