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- Maclean, C. (author) doctoral thesis 1957
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- Van Geel, C. (author) doctoral thesis 1955
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- Le Poole, J.B. (author) doctoral thesis 1954
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- Van Zoonen, D. (author) doctoral thesis 1954
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- Francken, J.C. (author) doctoral thesis 1953
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- Le Rütte, W.A. (author) doctoral thesis 1952
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- De Wolff, P.M. (author) doctoral thesis 1951
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- Kreger, D.R. (author) doctoral thesis 1948
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- Goppel, J.M. (author) doctoral thesis 1946
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- Nawijn, A. (author) doctoral thesis 1943
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- Verhagen, C.J.D.M. (author) doctoral thesis 1942
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- Rottier, P.B. (author) doctoral thesis 1942
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- Oosterkamp, W.J. (author) doctoral thesis 1939
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- Heijn, F.A. (author) doctoral thesis 1938
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- Gonsalves, V.E. (author) doctoral thesis 1937
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- Mulder, J.G.W. (author) doctoral thesis 1934
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- Visser, G.H. (author) doctoral thesis 1932