000 00375nam a2200157Ia 4500
008 201006s2009 xx 000 0 und d
041 _aeng
082 _aWHO
100 _aOrganization World Health
245 _aHealth Research Methodology
250 _a2
260 _aGeneva
_bW H O
_c2009
300 _a162
650 _aCommunity Dentistry(617.601)
650 _aNone
999 _c81075
_d81075