000 00279nam a22001331a 4500
020 _a9241544937
041 _aeng
080 _a616.31
_bO61
245 _aOral Health Surveys Basic Methods
250 _a4th
260 _aGeneva
_bWHO
_c1997
300 _a66
942 _cPB
_2UDC
999 _c164264
_d164264
945 _a1
_bAdmin Admin
_c1
_dAdmin Admin