000 00243nam a2200109Ia 4500
100 _aW.H.O.T.R.S. 796
942 _cBK
245 _aThe use of essential drugs
260 _aW.H.O., Geneva
_c1990
082 _aR617.601/WHO/TRS W.H
300 _a57
999 _c58843
_d58843