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Witten, I.H.; Bainbridge, M.; Nichols, D.M.: How to build a digital library (2010)
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Stafford, J.: the experience of a Brazilian university's library system (1997)
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Brunelle, B.S.; Johnson, D.: 'Full' full text (1994)
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Buntrock, R.E.: UMI's applied science and technology plus (1997)
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Rifkind, E.: McGraw-Hill Science Navigator (1995)
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