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AFNOR
AFNOR
NF P31-201-1
En Vigor
1993-05-01
DTU 40-22. Building works. Roof-covering made from hollow terracotta
tiles. Part 1 : technical specifications.
AFNOR
AFNOR
NF ISO 6842
En Vigor
1989-12-01
Surface active agents. Sulfated ethoxylated alcohols and alkylphenols.
Determination of total active matter content.










