TY  - BOOK
AU  - Ravallion, Martin
AU  - World Bank
TI  - On the implications of essential heterogeneity for estimatin
PY  - 2011///
CY  - Washington DC
PB  - World Bank
UR  - http://elibrary.igidr.ac.in/e-library/working papers/World Bank/PRWP/2011/E6384.pdf
ER  -