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Laan, H. van der: Nieuwe Nederlandse Web-Woelers (1998)
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- Informatie professional. 2(1998) no.3, S.34-35
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Laan, H. van der: Northern Light : nieuw licht aan een veranderend firmament (1997)
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- Informatie professional. 1(1997) no.12, S.30-31
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Laan, H. van der; Mettrop, W.: Werkgroep IRT (1) : search engines aan de tand gevoeld (1998)
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- Informatie professional. 2(1998) nos.7/8, S.32-34
