Die Präparate der biologisch-dynamischen Wirtschaftsweise
By: Hans Penner.
Series: Berichte der Bundesforschungsanstalt für Ernährung,; BFE-R-92-02
Publisher: Bundesforschungsanstalt für Ernährung
Published: 1992
Place of publication: Karlsruhe
Language: ger
Number of pages: 38
Subjects: Organic farming.
Notes: Summary in English.
Includes bibliographical references (p. 21-22).