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classification_ss:"LB1028.5.C5258 1990"
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Cognition, education and multimedia : exploring ideas in high technology (1990)
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1.0 = *:*, product of: 1.0 = boost 1.0 = queryNorm
classification_ss:"LB1028.5.C5258 1990"
1.0 = *:*, product of: 1.0 = boost 1.0 = queryNorm