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
S. K. Pottekkatt 1982. (The last three volumes are a compilation of previous works) S. K. Pottekkatt Sankaran Kutty Pottekkatt (14 March 1913 – 6 August 1982), popularly known as S. K. Pottekkatt, is a famous Malayalam writer from Kerala state, South India. He is the author of nearly sixty books which include ten novels, twenty-four collections of short stories, three anthologies of poems, eighteen travelogues, four plays, a collection of essays and a couple of books based on personal reminiscences. Pottekkatt won the Kerala Sahitya Academy award of 1961 for the novel "Oru Theruvinte Katha" ("The Story of a Street") and the