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. (n.d. ). "Titel". In Schulentwicklung. Bern, Switzerland: , . Retrieved Mar 5, 2021, from https://www.peterlang.com/view/9783034324595/xhtml/title.xhtml
. "Titel". Schulentwicklung. Bern, Switzerland: , , n.d. . <
https://doi.org/10.3726/b10774/2>. Web. 5 Mar. 2021.
. "Titel". In Schulentwicklung, (Bern, Switzerland: , , n.d. ) accessed Mar 5, 2021,
https://doi.org/10.3726/b10774/2
(n.d. ). Titel. In Schulentwicklung, Bern, Switzerland: , . available from: <
https://doi.org/10.3726/b10774/2> [Accessed 05 March 2021]