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. 2009 Aug 4;9(8):6171–6184. doi: 10.3390/s90806171

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© 2009 by the authors; licensee MDPI, Basel, Switzerland

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 1. — Concept of farm operation monitoring system.