Baedeker vetting Baedeker guides, proposing and effecting changes in the text, as they saw fit, and laying down to whom certain guides could be sold. Baedeker was asked to publish a guidebook for the German Army of Occupation in Poland, with history written as the Nazis wished it to be written, as the introduction to the 1943 book "Das Generalgouvernement" reveals. The 1948 "Leipzig" was the first post-World War II Baedeker and the last one to be published in Leipzig, which was now in the Russian zone. The Russians had not granted Baedeker a publishing licence. Hans got round this by
Karl Baedeker (scientist) This was the first example of doping a semiconductor to change its properties and also the discovery of transparent conductive materials. He also observed a Hall effect in transparent copper iodide thin films that had the reverse sign to that in copper, an observation of what was later to be known as conduction by electron holes in semiconductors. This observation was critical in developing the theory of electron conduction in solids. Along with his graduate student Karl Steinberg, Baedeker studied the effect of varying concentration of iodine on the electrical properties of copper iodide. He also is credited with making