000 00257nam a22000977a 4500
082 _a330.05 RES.N1
245 _aThe World Bank Research Observer Vol.6 No.2,1991
260 _a Washington D C
_b The World Bank
_c1991
300 _a248p.
942 _2ddc
_cUN&WB
999 _c743251
_d743251