TY - CONF A1 - Wiggenhauser, Herbert A1 - Streicher, Doreen T1 - Non-destructive testing of bridges T2 - 4th International Conference on Construction Materials: Performance, Innovations and Structural Implications T2 - 4th International Conference on Construction Materials: Performance, Innovations and Structural Implications CY - Nagoya, Japan DA - 2009-08-24 PY - 2009 AN - OPUS4-20782 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -