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By Erhard Buhler. Author Erhard Buhler. - Contribution II. Basic knowledge is needed. The author can get instruction. Hartmann, Institut fUr Regelungstechnik, Technische Universit?t Berlin, HardenbergstraBe 29c, 1000 Berlin 12, West Germany.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.