000 00404cam a22001337a 4500
008 180718b1990 xxu||||| |||| 00| 0 eng d
082 _aO62 N689
100 _aNogues, Julio
245 _aPatents and pharmaceutical drugs: understanding the pressures on developing countries
_cby Julio Nogues
260 _aWashington
_bIBRD
_c1990
300 _a41p
440 _aWorking Papers: WPS 502
650 _aDrugs
999 _c223059
_d223059