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München: Fink, 1992
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Hildesheim [u.a.]: Olms, 1988
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München: Fink, 1992 ; Online-Ausg.: München: Bayerische Staatsbibliothek, 2009
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Centre for Evaluation in Education and Science (CEON/CEES), 2018
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National Library of Serbia, 2017
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National Library of Serbia, 2012
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Faculty of Sciences and Mathematics, University of Niš, 2012
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Centre for Evaluation in Education and Science (CEON/CEES), 2012
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2018
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National Library of Serbia, 2017
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Centre for Evaluation in Education and Science (CEON/CEES), 2023
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Ovid Technologies (Wolters Kluwer Health), 2022
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National Library of Serbia, 2017
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National Library of Serbia, 2008
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Elsevier BV, 2021
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MDPI AG, 2021
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Informa UK Limited, 2021
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Informa UK Limited, 2020
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Informa UK Limited, 2019