TY  - BOOK
AU  - Koepf,Herbert H.
AU  - Pettersson,Bo D.
AU  - Schaumann,Wolfgang
TI  - Bio-dynamic agriculture: an introduction 
AV  - S605.5 .K6213
U1  - 630.5/8 
PY  - 1976///
CY  - Spring Valley, N.Y.
PB  - Anthroposophic Press
KW  - Organic farming
N1  - Translation of Biologische Landwirtschaft; Includes index; Bibliography: p. 404-416
ER  -