 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (March 2019) |
Max Proebstl (24 September 1913 – 19 November 1979) was a German opera and oratorio singer (bass).[1]
| This article includes a list of general references, but it lacks sufficient corresponding inline citations. (March 2019) |
Max Proebstl (24 September 1913 – 19 November 1979) was a German opera and oratorio singer (bass).[1]