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- Vedeler, Georg (author) public lecture 1958
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- Balhan, J. (author) public lecture 1953
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- Lammeren, W.P.A (author) public lecture 1949
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- Troost, Laurens (author) public lecture 1946
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- von Sanden, Kurt (author) public lecture 1937
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- Warner, Edward P. (author) public lecture 1925