TY  - GEN
AU  - Ravallion, Martin
TI  - Policy Research Working Paper : The Mystery of the Vanishing Benefits Ms. Speedy Analyst's Introduction to Evaluation
U1  - 362.50723 RVA 
PY  - 1999///
CY  - Washington
PB  - The World Bank
KW  - Mystery of the Vanishing Benefits
ER  -