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Loosjes, T.P.; Tichelaar, P.A.; Goossens, J.; Stuurman, P.: Ontsluiting op onderwerp (1977)
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Zakrzewska, E.D.: GOO of UDC? : twee systemen voor inhoudelijke ontsluiting vergeleken (1997)
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Stokmans, M.; Oomens, A.: Meer grasduinen door genreplaatsing? : genre- of alfabetische plaatsing: onderzoek naar verschillen in gebruikersgedrag (1997)
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Rotten, C. v.d.: oderzoek naar alternatieve plaatsing : Bijna net zoveel systemen als bibliotheken (1995)
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Voorbij, H.: ¬Een goede titel behoeft geen trefwoord, of toch wel? : een vergelijkend oderzoek titelwoorden - trefwoorden (1997)
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