2024-03-28T20:51:43Z
https://journals.umcs.pl/index/oai
oai:ojs.umcsd.home.net.pl:article/7242
2018-06-28T07:04:26Z
pjss:OBY
oai:ojs.umcsd.home.net.pl:article/4036
2016-08-09T14:47:08Z
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oai:ojs.umcsd.home.net.pl:article/2768
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oai:ojs.umcsd.home.net.pl:article/1208
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oai:ojs.umcsd.home.net.pl:article/1207
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oai:ojs.umcsd.home.net.pl:article/524
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oai:ojs.umcsd.home.net.pl:article/523
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