Question: How much of the glaciation in the country where the Aschenbrodel composer was a citizen has disappeared?

<P0-S0> High levels of precipitation cause the glaciers to descend to permafrost levels in some areas whereas in other, more arid regions, glaciers remain above about the 3,500 m (11,483 ft) level. <P0-S1> The 1,817 square kilometres (702 sq mi) of the Alps covered by glaciers in 1876 had shrunk to 1,342 km2 (518 sq mi) by 1973, resulting in decreased river run-off levels. <P0-S2> Forty percent of the glaciation in Austria has disappeared since 1850, and 30% of that in Switzerland. <SEP> <P1-S0> the chancellor manuscript is a 1977 novel, by american writer robert ludlum, about the alleged secret files of j. edgar hoover and how they disappeared after his death, and how they possibly could be used to force people in high places to do the bidding of those who possessed the secrets contained therein. <P1-S1> it also speculated that hoover himself might have been assassinated because he knew too much about too many of the wrong people. <SEP> <P2-S0> the rohingya people have consistently faced human rights abuses by the burmese regime that has refused to acknowledge them as burmese citizens (despite some of them having lived in burma for over three generations)—the rohingya have been denied burmese citizenship since the enactment of a 1982 citizenship law. <P2-S1> the law created three categories of citizenship: citizenship, associate citizenship, and naturalised citizenship. <P2-S2> citizenship is given to those who belong to one of the national races such as kachin, kayah (karenni), karen, chin, burman, mon, rakhine, shan, kaman, or zerbadee. <P2-S3> associate citizenship is given to those who cannot prove their ancestors settled in myanmar before 1823, but can prove they have one grandparent, or pre-1823 ancestor, who was a citizen of another country, as well as people who applied for citizenship in 1948 and qualified then by those laws. <P2-S4> naturalized citizenship is only given to those who have at least one parent with one of these types of burmese citizenship or can provide "conclusive evidence" that their parents entered and resided in burma prior to independence in 1948. the burmese regime has attempted to forcibly expel rohingya and bring in non-rohingyas to replace them—this policy has resulted in the expulsion of approximately half of the 800,000 rohingya from burma, while the rohingya people have been described as "among the world's least wanted" and "one of the world's most persecuted minorities." <P2-S5> but the origin of ‘most persecuted minority’ statement is unclear. <SEP> <P3-S0> The Vienna Walzer Orchestra (German: Wiener Walzer Orchester) is a chamber orchestra based in Vienna, Austria that specializes in traditional Viennese waltzes, polkas, marches and operetta arias from composers such as: J. Strauss II, F. Lehár, C.M. <P3-S1> Ziehrer, among others. <P3-S2> Their concerts also always include performances by ballet dancers and opera singers. <SEP> <P4-S0> Aschenbrödel ("Cinderella") is a ballet written by Johann Strauss II. <P4-S1> He had written all the principal parts of the ballet, and was intending to fill in the orchestration as time permitted. <P4-S2> However, Strauss died in 1899, and it was finished by composer Josef Bayer in 1900.