@base . a ; . a . a ; "1082-0736" ; . "United States" . a ; "1082-0736" ; . a , , ; , , ; "Nigerian liberation." ; ; ; "1082-0736" ; ; "1082-0736" ; ; "1082-0736" ; "Nigerian liberation" , "Nigerian liberation." ; . . a ; ; "20040609182600.0"^^ ; ; . a , ; "Nigerian liberation" .