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Books about Ritzerfeld:
Bzzlletin nr.103, februari 1983: J. Ritzerfeld by N/A (1983)
Marketing-Mix-Strate... in Investitionsg?term?r... Entwicklung und Simulation marktstrukturspezifi... Strategien... (1993)
Wiki information Ritzerfeld:
Jörg Ritzerfeld is a German ski jumper who has competed since 2001. His best World Cup finish was third in the team large hill events twice, earning them in 2005 and 2007. Rizerfeld also finished 40th in the individual event at the 2002 FIS Ski...
A spirit duplicator was a printing method invented in 1923 by Wilhelm Ritzerfeld and commonly used for much of the rest of the 20th century. The term "spirit duplicator" refers to the alcohols which were a major component of the solvents used as...