_dta:
  1.  by Jean Roth , jroth@nber.org , 14 Apr 2017

  obs:       150,321                          
 vars:             4                          14 Apr 2017 14:16
 size:   147,013,938                          (_dta has notes)
-------------------------------------------------------------------------------
              storage   display    value
variable name   type    format     label      variable label
-------------------------------------------------------------------------------
prodid          str47   %47s                  Product ID
ndc             str10   %10s                  Product NDC
packcode        str12   %12s                  NDC Package Code
packdesc        str909  %909s                 Package Description
-------------------------------------------------------------------------------
Sorted by: prodid  ndc  packcode  packdesc