Herbert KoepfHerbert Hans Koepf (1914-2007) was a hands-on farmer in Germany who went on to receive a PhD in agriculture, specializing in soil science. In 1962, after the death of Ehrenfried Pfeiffer, with whom Koepf had worked closely, he became director f Pfeiffer's biodynamic research laboratory in Spring Valley, New York. In 1970, he moved to Emerson College in the UK to run the annual biodynamic agriculture course until 1990. He lectured widely and was head of the Agriculture Section at the Goetheanum in Switzerland. His other books include Research in Biodynamic Agriculture: Methods and Results (1993). Read More Read Less