Layer, P. G., and E. Willbold: Novel Functions of Cholinesterases in Development, Physiology and Disease. Progr. Histochem. Cytochem. Vol. 29, No 3. Stuttgart/New York: Gustav Fischer Verlag 1995, 94 pp., 22 Figs., 6 Tables, Price: DM 110, -. ISBN 3-437-11628-2, US-ISBN 1-56081-415-2, ISSN 0079-6336