@base . a ; "1934-2861" ; . a . a ; ; "20210206231500.0"^^ ; ; . "Wisconsin" . a ; . a , , ; , , ; "Ground support worldwide." ; ; ; ; "2150-4016" ; ; ; "2150-4016" ; ; "2150-4016" ; "Ground support worldwide." , "Ground support worldwide (Online)" ; ; "http://www.groundsupportworldwide.com/publication/archives.jsp?publd=1&year=2009" . a ; "2150-4016" ; . a , ; "Ground support worldwide (Online)" . .