opened on:  25 Aug 2014, 02:51:09

_dta:
  1.  by Jean Roth , jroth@nber.org , 2012-10-10
  2.  by Jean Roth , jroth@nber.org , 11 Aug 2014
  3.  Census 2000 SF1 Summary Level 050
  4.  Unique identifier is county
  5.  Distances between County that are within 500 miles

> 0miles.dta
  obs:     2,640,284                          
 vars:             3                          11 Aug 2014 10:15
 size:    47,525,112                          (_dta has notes)
-------------------------------------------------------------------------------
              storage   display    value
variable name   type    format     label      variable label
-------------------------------------------------------------------------------
county1         str5    %9s                   County
mi_to_county    double  %10.0g                Distance between counties that
                                                are within 500 miles
county2         str5    %9s                   County
-------------------------------------------------------------------------------
Sorted by:  county1  mi_to_county  county2