000 00301nam a2200109Ia 4500
008 220729s1987 xx 000 0 und d
041 _aeng
100 _aCotton P B
245 _aPractical gastro-intestinal endoscopy
250 _a3
260 _aUnited Kingdom
_bBlackwell Scientific Publications
_c1987
999 _c129617
_d129617