Koukoulakis P., Papadopoulos A., 2007. Problem soils and their improvement. Publisher Stamoulis, pp.412 ISBN: 9603516937 (in Greek)
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Koukoulakis P., Papadopoulos A., 2003. Interpretation of leaf analysis. Publisher Stamoulis, pp.516 ISBN: 9603514403 (in Greek)
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Koukoulakis P., Papadopoulos A., 2001. Interpretation of soil analysis. Publisher Stamoulis, pp.372 ISBN: 9603513423 (in Greek)
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Koukoulakis P., Simonis A., Gertsis A., 2000. Soil organic matter - The problem of Greek soils. Publisher Stamoulis, pp.492 ISBN: 9603513105 (in Greek)
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Chatzistathis Th., 2014. Micronutrient deficiency in soils and plants. Publisher Bentham E-books, pp.205 ISBN: 9781608059355 (in English)
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