Opus number developed other catalogue-number systems; among them the "Bach-Werke-Verzeichnis" (BWV-number), and the "Köchel-Verzeichnis" (K- and KV -numbers) with which are organised the works of Johann Sebastian Bach and Wolfgang Amadeus Mozart, respectively. In the classical period, the Latin word "opus" ("work", "labour") was used to identify, list, and catalogue a work of art. By the 15th and 16th centuries, the word "opus" was used by Italian composers to denote a specific musical composition, and by German composers for collections of music. In compositional practise, numbering musical works in chronological order dates from 17th century Italy, especially Venice. In common usage, the
Austrian Canadians into the early 20th, until this was tightened in 1914 at the onset of World War I. Austrian Canadian population by province and territory in Canada in 2011: Austrian Canadians Austrian Canadians are Canadian citizens who are of Austrian ancestry or Austrian-born people who reside in Canada. According to the Canada 2011 Census there were 197,990 Canadians who claimed either full or partial Austrian ancestry. Austrian Canadian communities can be found throughout the country but with a higher concentration mainly in Western Canada. In the 17th century, soldiers from the Austro Hungarian Empire settled in New France. Numbers increased following