John (Jack) W. Duffield
By: F. T. Ledig and B. J. Zobel
Language: English
Page range: 91 - 92
Published online: Oct 14, 2017
Published in print: Dec 1, 2007
Published by: Johann Heinrich von Thünen Institute
In partnership with: Paradigm Publishing Services
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© 2017 F. T. Ledig, B. J. Zobel, published by Johann Heinrich von Thünen Institute
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.