Boenninghausen's Characteristics and Repertory › VOICE AND SPEECH › Conditions of voice › Air

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C. M. Boger · Boenninghausen's Characteristics and Repertory · 1905 first edition · p. 742 · 0 remedies
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Cite: C. M. Boger, Boenninghausen's Characteristics and Repertory, 1905 first edition, p. 742 — VOICE AND SPEECH; Conditions of voice; Air; Open