193,158 Vol. 38. MICHEL'SON MICHAIL JAKOVLEVlC, ZEJMAL ELLA VLADISLAVOVINA Acetylcholine. An approach to the molecular mechanism of action. Transl. from the Russian by E. Lesser and Mira Lesser. Oxford 1973 Pergamon Press 4° s. XVIII, 243, tabl. 7, ilustr. International Series of Monographs in Pure and Applied Bidology. Modern Trends in Physiological Sciences Division, vol. 38