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1
by Giese, Erich, Blum, Otto, Risch, Kurt
Published 1925
Springer Berlin Heidelberg
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2
by Blum, Otto, Schimpff, G., Schmidt, W.
Published 1937
Springer Berlin Heidelberg
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3
by Blum, Otto, Otzen, Robert, Schimpff, G., Schmidt, W.
Published 1921
Springer Berlin Heidelberg
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4
by Blum, Otto
Published 1930
Springer Berlin Heidelberg