1
Book
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Published: Frankfurt am Main : Röderberg, 1981
Book
3
Book
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5
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7
8
9
Published: Bern ; München : Francke
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10
Published: Bern : Francke
Bern ; München
Berlin
Bern ; München
Berlin
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Book
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13
14
15
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17
Published: Stuttgart : Metzler, 1979
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18
Published: Gerlingen : Schneider, 1994
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