1
published 1980
...1532-4834...
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Verlag
Electronic Journal
2
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3
5
6
8
...1532-4834...
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10
12
...0197-3533...
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13
14
15
...1532-4834...
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17
18
...0197-3533...
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E-Article
19
20
...1532-4834...
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E-Article