1989 Pilot Study
Updates & Errata
Current Dataset Release: May 3, 1999 Version
May 3, 1999
Added dataset ID and version number.
Already Applied
Current Dataset Release: October 1998 Version
October 1998
1998 CD-ROM release.
May 3, 1999
Added dataset ID and version number.
October 1998
1998 CD-ROM release.