2005-11-04 On 2005-03-14 new files were added to one
or more datasets. These files included additional setup files as well
as one or more of the following: SAS program, SAS transport, SPSS portable,
and Stata system files. The metadata record was revised 2005-11-04 to
reflect these additions.
2000-09-29 SPSS data definition statements were updated and
SAS data definition statements were added to this collection. Also,
the codebooks and data collection instrument are now available in two