000 00298nam a2200121Ia 4500
001 26668
008 170722s9999 xx 000 0 und d
100 _aMacphee, Torquil
245 _aEssentials of periodontology and periodontics /
260 _c1969.
700 _aCowley, Geoffrey
942 _cGEN
999 _c76484
_d76484