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After reading 1247 websites, we found 2 different results for "Who wrote Über das Geistige in der Kunst"
Wassily Kandinsky
In 1914 Wassily Kandinsky wrote the pioneering work “Über das Geistige in der Kunst” (Concerning the Spiritual in Art).
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Klee's art history writing Über das Geistige in der Kunst
At the same time, Kandinsky published Klee's art history writing Über das Geistige in der Kunst.
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