00275nam a2200109Ia 4500008004100000082001300041082000800054245007800062245000800140260000800148300000900156231017s9999    xx            000 0 und d  a624.1834  bBSI 0a"Concrete- Part 1; Specification, performance, production and conformity" 0cBSI  bBSI  c30cm