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Ladner, S.J.; Hope, N.T.: How special librarians really use the Internet (1992)
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Ladner, S.J.; Tillman, H.N.: Using the Internet for reference (1993)
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Ladner, S.J.; Tilman, H.N.: ¬The internet and special libraries : use, training, and the future (1993)
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Tillman, H.N.; Ladner, S.J.: Special librarians and the INTERNET (1992)
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Tillman, H.N.; Ladner, S.J.: Special librarians and the Internet : a descriptive study (1994)
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