00484nam a2200145Ia 4500008004100000082001000041082000800051245013700059245000800196260000800204300000900212942000800221999001900229952009000248231017s9999    xx            000 0 und d  a624.1  bBSI 0a"Stairs, Ladders and Walkways - Part1: Code of Practice for the Design, Construction and Maintenance of Straight Stairs and Winders" 0cBSI  bBSI  c30cm  cREP  c604030d604030  00104070aNITbNITd2023-10-17l0o624.1 BSIpNIT-2859r2023-10-17w2023-10-17yREP