|Title||Spiritual Foundations for the Renewal of Agriculture. A Course of Lectures held at Koberwitz, Silesia, June 7 to June 16, 1924|
|Year of Publication||1993|
|Authors||Steiner, R, Creeger, EC, Gardner, M|
|Publisher||Bio-Dynamic Farming and Gardening Association|
An extensive list of references from the earlier literature can be found in the bibliography section.