000 00252nam a22000977a 4500
008 170113b xxu||||| |||| 00| 0 eng d
041 _aeng
080 _a618.2
245 _aEXAMINATION AND DIAGNOSIS OF PERIODONTAL DISEASE
_cRATCLIFF, P.A
942 _2udc
_cBK
999 _c2849
_d2849