TY  - BOOK
AU  - Balk,B M
TI  - Price and quantity index numbers: models for measuring aggregate change and difference 
SN  - 9780521889070
U1  - 338.528 
PY  - 2008///
CY  - Cambridge
PB  - Cambridge University Press,
KW  - Index numbers (Economics)
KW  - Price indexes
ER  -