http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1 volume (loose-leaf) : illustrations ; 26 cm.
"Supersedes DA Pam 27-4, 1 June 1972; and DA letter, DAAG-PAP-A(M) (11 Mar 74) ...."
"Reprint which includes current pages from changes 1 and 2."