000 00311nam a2200121Ia 4500
100 _aworld Health Organization
020 _a81-7018-684-6
942 _cBK
245 _aDiseases of the Digestive System
260 _aB.R.Publishing Corporation, New Delhi
_c1990
082 _a616.3 WHO/CIMOS
300 _axvi,269
999 _c64145
_d64145