@base . a . a , , ; , , ; "Michigan school bus accidents." ; ; ; "0097-8744" ; ; "0097-8744" ; ; "0097-8744" ; "Michigan school bus accidents" , "Michigan school bus accidents." ; . . "Michigan" . a ; . a ; "0097-8744" ; . a ; "0097-8744" ; . a ; ; "20091123145000.0"^^ ; ; . a , ; "Michigan school bus accidents" .