Author

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R. Burgert

17 articles by this author

Article
 01-05-1993
 Unique: 382 | Total: 774
 253-255
Article
 01-02-1981
 Unique: 394 | Total: 700
 52-64
Article
 01-07-1976
 Unique: 350 | Total: 656
 352-365

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