Köchel catalogue son's earlier works; Mozart's catalogue of his own compositions (begun in February 1784 with K. 449) allows relatively precise dating of many of his later works. The catalogue included the opening bars of each piece, known as an incipit. Köchel divided the corpus into a main chronology of 626 works, and five appendices ("" in German, abbreviated to "Anh.") The appendices (Anh. I-V) included: Since Köchel published his original catalogue in 1863 (now referred to as K), the dating of Mozart's compositions has been subject to constant revision. Many more pieces have since been found, re-dated, re-attributed and re-numbered, requiring
K+S Poland, Portugal, Russia, Spain, Sweden and Switzerland in Europe, The Bahamas, Canada and the US in North America, Brazil, Chile and Peru in South America, China, India and Singapore in Asia, and South Africa in Africa. The K+S Group has three divisions, which are strategically, technically and economically closely linked. They are supported by service units and holding functions of the K+S AG K+S K+S AG (formerly" Kali und Salz GmbH") is a German chemical company headquartered in Kassel. The company is Europe’s largest supplier of potash for use in fertilizer and, after the acquisition of Morton Salt, the world's