Project Gutenberg 2010-08-02 Public domain in the USA. 38 Hurwitz, Wallie Abraham 1886 1958 Randwertaufgaben bei Systemen von linearen partiellen Differentialgleichungen erster Ordnung de Differential equations, Partial QA Text Mathematics DE Sachbuch 510804 2010-08-02T10:20:09 application/pdf 9988 2025-07-13T12:15:02.014431 application/rdf+xml 288367 2021-06-11T17:20:33 application/prs.tex 27318 2025-07-13T12:15:01.949423 image/jpeg 4795 2025-07-13T12:15:01.701390 image/jpeg 431365 2010-08-02T10:20:10 application/octet-stream application/zip 71069 2021-06-11T17:20:33 application/octet-stream application/zip Archives containing the RDF files for *all* our books can be downloaded at https://book.klll.cc/wiki/Gutenberg:Feeds#The_Complete_Project_Gutenberg_Catalog en.wikipedia