TY  - BOOK
AU  - Metrick, Andrew
AU  - Zeckhauser Richard
AU  - National Bureau Of Economic Research
TI  - Price versus quantity: market clearing mechanisms when sellers differ in quality
T2  - NBER working paper series
U1  - WP 5728 
PY  - 1996///
CY  - Cambridge, MA
PB  - NBER
ER  -