Author

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F. Graafstal
10 articles by this author
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Article
 01-05-1981
 Unique: 949 | Total: 1645  | Access Period:
 324-333
Article
 01-02-1978
 Unique: 602 | Total: 951  | Access Period:
 42-54
Article
 01-06-1972
 Unique: 706 | Total: 1086  | Access Period:
 263-271
Article
 01-11-1970
 Unique: 648 | Total: 1064  | Access Period:
 448-461
Article
 01-01-1968
 Unique: 545 | Total: 917  | Access Period:
 84-97
Article
 01-12-1965
 Unique: 896 | Total: 1553  | Access Period:
 414-438
Article
 01-03-1961
 Unique: 866 | Total: 1784  | Access Period:
 130-148
Article
 01-05-1951
 Unique: 612 | Total: 1206  | Access Period:
 192-203

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