Template-Type: ReDIF-Article 1.0 Author-Name: Philip J. Cook Author-Name: Bruce Sacerdote Title: Comments Journal: Brookings-Wharton Papers on Urban Affairs Pages: 210-218 Volume: 2003 Issue: 1 Year: 2003 DOI: 10.1353/urb.2003.0002 Handle: RePEc:aoo:46222