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| 001 | a0012809+1 | ||
| 008 | 010621s1971 gw ger d | ||
| 005 | 20170721134949.0 | ||
| 035 | |a a0012809 | ||
| 090 | |a LN 1 Wolf | ||
| 245 | 0 | 4 | |a Die Oper |n 1 |p Anfänge bis 17. Jahrhundert |
| 264 | 1 | |a Köln : |b Volk, |c 1971 | |
| 300 | |a 123 S. 4° | ||
| 830 | 1 | |a Die Oper |w a0012809 | |
| 700 | 1 | |a Wolff, Hellmuth Christian |4 aut | |
| 490 | 1 | |a Die Oper | |
| 773 | 0 | 8 | |w a0012809 |c 1 |
| 099 | 1 | |a 20010621 | |