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020 _a9788170005728
082 _a25.84
_bBAL
_223
100 _aBALLOFFET, Nelly
245 _aPreservation and conservation for libraries and archives
260 _aNew Delhi
_bEss Ess Pub.
_c2009
300 _axix, 214 p.
650 _aLibrary materials preservation
942 _cR