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Van der Schans, R. (author)Dit boek kwam tot stand ter gelegenheid van het 50-jarig bestaan, op 5 november 1998, van de opleiding tot geodetisch ingenieur.book 1998
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- Hartman, R.P.A. (author) doctoral thesis 1998
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- Taheri-Motlagh, A. (author) doctoral thesis 1998
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- Hashagen, F. (author) doctoral thesis 1998
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- Meinders, E.R. (author) doctoral thesis 1998