The biodynamic spray and compost preparations production methods : based on details given in Agriculture, a course of 8 lectures held by Rudolf Steiner in Koberwitz, nr Wraclaw (Breslau) in 1924 and on practical experience with the preparations from 1924 to 1998.
Wistinghausen, Christian von.
Steiner, Rudolf,1861-1925.
Biodynamic Agricultural Association.
Stroud : Biodynamic Agricultural Association,
c2000.
Previous ed.: Darmstadt : Forschungsring für Biologisch-Dynamische Wirtschaftsweise, 1998.
Includes bibliographical references.