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[1976]
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Trakia University, 2017
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Trakia University, 2017
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Trakia University, 2017
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Trakia University, 2017
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Trakia University, 2016
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Trakia University, 2016
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Trakia University, 2016
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Ovid Technologies (Wolters Kluwer Health), 2013
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Informa UK Limited, 2011
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Wiley, 1992
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Springer Science and Business Media LLC, 2013
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American Chemical Society (ACS), 2015
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Wiley, 2012
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Hindawi Limited, 2011
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Wiley, 2009
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Wiley, 2007
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Springer Science and Business Media LLC, 2005
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Springer Science and Business Media LLC, 2005
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Scientific Societies, 2001