00473nam a2200145Ia 4500008004100000082001000041082000800051245010400059245001900163260001900182300000900201942000800210999001900218952009000237231017s9999    xx            000 0 und d  a620.5  bBIR 0aEffects of Increasing the Allowable Comprehensive Stress at Release of Prestressed Concrete Girders 0cDavid Birrcher  bDavid Birrcher  c30cm  cREP  c603999d603999  00104070aNITbNITd2023-10-17l0o620.5 BIRpNIT-3611r2023-10-17w2023-10-17yREP