Author

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J. A. Burggraaff
21 articles by this author
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Article
 01-03-1975
 Unique: 360 | Total: 612  | Access Period:
 143-143
Article
 01-03-1974
 Unique: 426 | Total: 752  | Access Period:
 80-89
Article
 01-03-1971
 Unique: 479 | Total: 915  | Access Period:
 91-100
Article
 01-03-1968
 Unique: 434 | Total: 785  | Access Period:
 168-175
Article
 01-11-1966
 Unique: 395 | Total: 702  | Access Period:
 418-423
Article
 01-06-1964
 Unique: 476 | Total: 1269  | Access Period:
 247-249
Article
 01-01-1964
 Unique: 443 | Total: 992  | Access Period:
 14-19
Article
 01-06-1947
 Unique: 448 | Total: 1241  | Access Period:
 191-198

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