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원본
Briefe an seinen Schuler Hermann Unger. Max Reger. Briefe an seinen Schuler Hermann Unger composed by Max Reger. 1873-1916. B. Published by Edition Tonger. E4.T2901-1. ISBN M-005-29011-7.
번역
Briefe an seinen Schuler Hermann Unger. 최대 레거. Briefe an seinen Schuler Hermann Unger composed by Max Reger. 1873년에서 1916년까지. B.는 판 Tonger 발행. E4.T2901-1. ISBN M-005-29011-7.