Barker, A. V. (2021). Science and technology of organic farming (Second edition.). CRC Press, an imprint of the Taylor & Francis Group, LLC.
Citace podle Chicago (17th ed.)Barker, Allen V. Science and Technology of Organic Farming. Second edition. Boca Raton, FL: CRC Press, an imprint of the Taylor & Francis Group, LLC, 2021.
Citace podle MLA (9th ed.)Barker, Allen V. Science and Technology of Organic Farming. Second edition. CRC Press, an imprint of the Taylor & Francis Group, LLC, 2021.
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