000 00313nam a2200121Ia 4500
008 220216s9999 xx 000 0 und d
100 _aPenfold A E
245 0 _aGutta percha: Its characteristics and manufacture
260 _bIRI Transactions
_c1933
300 _a407-417
650 _aGutta percha
942 _cJS
999 _c60209
_d60209