11. National Aeronautics and Space Administration procurement regulation, revisions. Bookmark SuDoc number: NAS 1.6/2:(date)/(nos.)
12. National Aeronautics and Space Administration procurement regulation, revisions. Bookmark SuDoc number: NAS 1.6/2:(date)/(nos.)
13. National Aeronautics and Space Administration procurement regulation, revisions. Bookmark SuDoc number: NAS 1.6/2:(date)/(nos.)
14. National Aeronautics and Space Administration procurement regulation, revisions. Bookmark SuDoc number: NAS 1.6/2:(date)/(nos.)
15. National Aeronautics and Space Administration procurement regulation, revisions. Bookmark SuDoc number: NAS 1.6/2:(date)/(nos.)
16. National Aeronautics and Space Administration procurement regulations, revisions. Bookmark SuDoc number: NAS 1.6/2:(date)/(nos.)