author = { Beethoven, Ludwig van Beethoven, Ludwig van AND Fejnberg, Samuil E. },

title = { 4-ja sonata mi bemolʹ mažor, soč. 7 = Sonata no. 4 in E flat major, op. 7 },

publisher = {Aprelevskij Zavod},

publisher = {: Meždunarodnaja Kniga},

keywords = { Schallplatte },

year = {[ca. 1960]},

year = {, [ca. 1960]},

abstract = {11-ja sonata si bemolʹ mažor, soč. 22 L. Betchoven},

address = { Moskva , ; [S.l.] },

url = { http://slubdd.de/katalog?TN_libero_mab2 }