Julius von Wiesner Die Rohstoffe des Pflansenreichs. (The Raw Materials of the Plant Kingdom.) Edited by Paul Krais and William von Brehmer. 4th edition. Volume 1. Alkaloide bis Hefen (Alkaloids to Yeasts). With 307 fig., 1122 pages. Press of Wilhelm Engelmann, Leipzig. 1927. The following coworkers have added to the success of this work: F. Boas, K. Bourant, E. Gilg, W. Figdor, F. Schneider, P. N. Schürhoff, J. Weese, H. Wolff, S. Zeisel and A. Zimmermann