2024-03-29T01:40:41Z
https://journals.umcs.pl/index/oai
oai:ojs.umcsd.home.net.pl:article/10544
2020-05-29T05:52:08Z
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oai:ojs.umcsd.home.net.pl:article/1671
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oai:ojs.umcsd.home.net.pl:article/15243
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oai:ojs.umcsd.home.net.pl:article/10651
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oai:ojs.umcsd.home.net.pl:article/10346
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oai:ojs.umcsd.home.net.pl:article/13565
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oai:ojs.umcsd.home.net.pl:article/13628
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