Moderne Probleme der Physik, by H. Sieveking 38157 [Language: German] [Link: http://www.gutenberg.org/3/8/1/5/38157 ] [Files: 38157-t.tex; 38157-pdf.pdf] Thanks to Constanze Hofmann, Mark C. Orton and the Online Distributed Proofreading Team at http://www.pgdp.net Regards, Al