Ludwig Ritter von Köchel since undergone revisions. Mozart's works are often referred to by their K-numbers ("cf." opus number); for example, the "Jupiter" symphony, "Symphony No. 41" K. 551. Moreover, Köchel arranged Mozart's works into twenty-four categories, which were used by Breitkopf & Härtel when they published the first complete edition of Mozart's works from 1877 to 1910, a venture partly funded by Köchel. He also catalogued the works of Johann Fux. Ludwig Ritter von Köchel Ludwig Alois Friedrich Ritter von Köchel (; 14 January 1800 – 3 June 1877) was an Austrian musicologist, writer, composer, botanist and publisher. He is best known for
19th-century Catholic periodical literature New York City, Detroit, Philadelphia, Winona, Cleveland, Ohio, Toledo, Baltimore, Pittsburgh, Stevens Point, Manitowoc, Mahanoy City, and Wilkes-Barre. Brazil also had a Polish publication. 19th-century Catholic periodical literature The 19th-century Catholic periodical literature is unique in many respects. Most of the periodical publications in mainly Catholic countries can be regarded as "Catholic" literature up to a few decades before 1800: the editorial line is implicitly Catholic in most instances. The development of the press in the 19th century was in general terms a major factor in secularization according to Owen Chadwick. On the other hand, mass printing also meant that