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| Only Books by Collis | X |
 | | Bio Dynamic Agriculture by Herbert H Koepf 1976 Hardcover(1st Edition) by Dr. Herbert H. Koepf, J. Collis Paperback, 442 Pages, Published 1976 by Steinerbooks, Inc ISBN-13: 978-0-910142-73-1, ISBN: 0-910142-73-4 |
 | | Companion Plants and How to Use Them by Helen Philbrick , Richard B. Gregg , Dr. Herbert H. Koepf Paperback, 112 Pages, Published 2016 by Floris Books ISBN-13: 978-1-78250-286-9, ISBN: 1-78250-286-6 |
 | | Koepf's Practical Biodynamics Soil, Compost, Sprays, and Food Quality by Dr. Herbert H. Koepf Paperback, 176 Pages, Published 2012 by Floris Books ISBN-13: 978-0-86315-926-8, ISBN: 0-86315-926-5 |
 | | The Biodynamic Farm Agriculture in the Service of the Earth and Humanity by Dr. Herbert H. Koepf , Roderick Schouldice , Walter Goldstein Paperback, 260 Pages, Published 2006 by Steinerbooks ISBN-13: 978-0-88010-172-1, ISBN: 0-88010-172-5 |
 | | Nitrate An Ailing Organism Calls for Healing by Herbert Hans Koepf 54 Pages, Published 2009 by Steinerbooks ISBN-13: 978-1-62151-189-2, ISBN: 1-62151-189-8 |
 | | The Biodynamic Farm Agriculture in the Service of the Earth and Humanity by Herbert H. Koepf 245 Pages, Published 2014 by Steinerbooks ISBN-13: 978-1-62151-162-5, ISBN: 1-62151-162-6 |
 | | Readings in Goethean Science by Johann Wolfgang , Herbert Hans Koepf , Linda S. Jolly 48 Pages, Published 1978 by Steinerbooks ISBN-13: 978-1-62151-194-6, ISBN: 1-62151-194-4 |
 | | Profits and Sustainability A History of Green Entrepreneurship by Geoffrey Jones 464 Pages, Published 2018 by Oxford University Press ISBN-13: 978-0-19-252188-0, ISBN: 0-19-252188-8 |
 | | Ecoand#8211;Alchemy and#8211; Anthroposophy and the History and Future of Environmentalism by Daniel Mckanan 312 Pages, Published 2017 by University Of California Press ISBN-13: 978-0-520-29005-1, ISBN: 0-520-29005-4 |
 | | Companion Plants and How to Use Them by Helen Philbrick , Richard B. Gregg Digital, 112 Pages, Published 2016 by Floris Books ISBN-13: 978-1-78250-338-5, ISBN: 1-78250-338-2 |
