000 00460cam a22001337a 4500
008 180718b1999 xxu||||| |||| 00| 0 eng d
100 _aRavallion, Martin
245 _aThe mystery of the vanishing benefits: ms. speedy analyst's introduction to evaluation
_cby Martin Ravallion
260 _aWashington, D.C.
_bWorld Bank
_c1999
300 _a40p.
440 _aPolicy research working paper 2153
650 _aPoverty
650 _aEconomic assistance, Domestic
999 _c278678
_d278678