Bio-dynamic agriculture : an introduction
Koepf, Herbert H.,
Bio-dynamic agriculture : an introduction - Spring Valley, N.Y. : New York, 1976. - 265p.
Originally published in German with the title 'Biologische Landwirtschaft'.
Biodynamic farming
Bio-dynamic agriculture : an introduction - Spring Valley, N.Y. : New York, 1976. - 265p.
Originally published in German with the title 'Biologische Landwirtschaft'.
Biodynamic farming