@misc
{TN_libero_mab2,
author = {
Beethoven, Ludwig van
Oborin, Lev N.
},
title = {
Sonata no. 26, op. 81a, in E flat major
= 26-ja sonata mi bemolʹ mažor, soč. 81a
},
publisher = {Aprelevskij zavod},
keywords = {
Schallplatte
},
year = {[ca. 1972]},
abstract = {Aprelevskiĭ Zavod: D-2798(a)--D-2799(a) (on container: D 2798-2799)},
abstract = {Sonata no. 31, op. 110, in A flat major},
address = {
[Moskva]
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}