“…Pungor, Havas, and Toth also reviewed the preparation and applications of membrane electrodes (167). Hanna and Siggia have reviewed kinetic methods of analysis (91), Walsh (217) has discussed recent major advances in atomic absorption spectroscopy, the use of laser-excited spectra for qualitative studies in geology and metallurgy has been summarized (150), and the principles and techniques of scanning electron probe microanalysis have been discussed (235). General sources of information of interest to the inorganic microanalyst include the translation of Yatsimirskii's and Vasil'ev's compilation of instability constants of complex compounds (237), the treatise on solvent extraction chemistry of metals (144), and the bibliography on flame spectroscopy (141)• The proceedings of various congresses and symposia are important sources of information.…”