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author_ss:"Lankes, R.D."
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type_ss:"m"
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theme_ss:"Informationsdienstleistungen"
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language_ss:"e"
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Lankes, R.D.; Collins, J.W.; Kasowitz, A.S.: Digital reference service in the new millennium : planning, management, and evaluation (2000)
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Lankes, R.D.: New concepts in digital reference (2009)
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