| Abbreviation |
C4 |
| German (de) |
Einstufung Schweiz 1. Klasse |
| English (en) |
Swiss 1st class |
| Spanish (es) |
Clase 1ª (Suiza) |
| French (fr) |
Niveau 1 - Suisse |
| Works with "C4" in evaluation level |
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| Works with "C4" in additional info/contents |
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| Works with "C4" in supplementary text |
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| Books with "C4" in additional info/contents |
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| Composers with "C4" in supplementary text |
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