Transportytelser i Norge 1946-2000 (Transport Performance in Norway 1946-2000)
Transportyltelser i Norge 1946-2003 (Transport Performance in Norway 1946-2003)
Transportytelser i Norge 1946-1997 (Transport Performance in Norway 1946-1997)
Transportytelser i Norge 1946-1995 (Transport Performance in Norway 1946-1995)