Workshop group six members Gerhard Cordes, Jürgen Ruttkamp, Christian Diringer, Dr. Michael Hartung at the International Management Conference with the Bilfinger Berger Group, November 8, 2002, A3054-00364. Missouri Historical Society Library and Research Center.

Workshop group six members Gerhard Cordes, Jürgen Ruttkamp, Christian Diringer, Dr. Michael Hartung at the International Management Conference with the Bilfinger Berger Group, November 8, 2002, A3054-00364. Missouri Historical Society Library and Research Center. https://mohistory.mobiusconsortium.org/repositories/2/digital_objects/16865 Accessed November 13, 2024.