Withdrawn Norm
The Norm standard ÖNORM EN 439:1991 03 01 was withdrawn on 01.12.1994 and is no longer available. The currently valid standard can be viewed here: ÖNORM EN ISO 14175
The Norm standard ÖNORM EN 439:1991 03 01 was withdrawn on 01.12.1994 and is no longer available. The currently valid standard can be viewed here: ÖNORM EN ISO 14175