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APA Citation
Schult, J., Mahler, N., Fauth, B., & Lindner, M. A. (2022). did students learn less during the COVID-19 pandemic? Reading and mathematics competencies before and after the first pandemic wave. School effectiveness and school improvement, 33(4), 544–563. http://access.bl.uk/ark:/81055/vdc_100169534409.0x000033