NBN T 52-552-1982 Lubricants, industrial oils and related products (class L) - Classification -Part 2 : Family F (Spindle bearings, bearings and associated clutches)
1982NBN T 52-552-1982 Lubricants, industrial oils and related products (class L) - Classification -Part 2 : Family F (Spindle bearings, bearings and associated clutches)