Author

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J. A. Burggraaff
21 articles by this author
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Article
 01-05-1981
 Unique: 679 | Total: 1098  | Access Period:
 246-246
Article
 01-12-1980
 Unique: 578 | Total: 978  | Access Period:
 544-545
Article
 01-03-1980
 Unique: 818 | Total: 1728  | Access Period:
 102-105
Article
 01-12-1979
 Unique: 656 | Total: 1127  | Access Period:
 554-562
Article
 01-04-1978
 Unique: 566 | Total: 944  | Access Period:
 162-168
Article
 01-06-1977
 Unique: 596 | Total: 991  | Access Period:
 274-281
Article
 01-03-1977
 Unique: 570 | Total: 965  | Access Period:
 98-103
Article
 01-02-1976
 Unique: 591 | Total: 950  | Access Period:
 104-116
Article
 01-01-1976
 Unique: 559 | Total: 958  | Access Period:
 55-57
Article
 01-01-1976
 Unique: 702 | Total: 1195  | Access Period:
 5-12
Article
 01-11-1975
 Unique: 565 | Total: 972  | Access Period:
 446-448

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