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ISSN: 2449-8998
Publisher: Warszawa Instytut Badań Edukacyjnych
Country: Poland
URL: www.edukacja.ibe.edu.pl
Status: Confirmed
Dates: 2012-9999
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ISSN: 2720-5789
URL: ebis.edu.pl//index.php?d= ...
Dates: 2002-9999
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