Methods of organic chemistry (Houben-Weyl). Vol. III, part 1: Physical research methods (mechanical, microscopic, mass spectrometric and isotope methods). Fourth completely revised edition: Edited by E. Müller, Tübingen; with the special assistance of O. Bayer, Leverkusen; H. Meerwein, Marburg; and K. Ziegler, Mühlheim. Georg Thieme Verlag, Stuttgart, Germany. 1955. xxx + 954 pp. Price $45.00