000 00344pam a2200157a 44500
008 230515b2012 xxu||||| |||| 00| 0 eng d
020 _aNULL
041 _aENGLISH
082 _a617.632
100 _aDUMITRESCU
245 _aUNDERSTANDING PERIODONTAL RESEARCH
250 _aI
260 _a
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300 _a772
650 _aNULL
999 _c564236
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