2024-03-29T05:36:37Z
https://journals.us.edu.pl/index.php/SSP/oai
oai:ojs.www.journals.us.edu.pl:article/3215
2020-05-02T11:05:22Z
SSP:FULL
oai:ojs.www.journals.us.edu.pl:article/3243
2020-05-02T11:06:22Z
SSP:FULL
oai:ojs.www.journals.us.edu.pl:article/3272
2020-05-02T11:11:31Z
SSP:FULL
oai:ojs.www.journals.us.edu.pl:article/3304
2020-05-02T11:14:06Z
SSP:FULL
oai:ojs.www.journals.us.edu.pl:article/3329
2020-05-02T11:16:27Z
SSP:FULL