Media type: E-Article Title: The Morrison String-Class System Contributor: Mattern, David; Morrison, Don; Gehrkens, Karl; Williams, Arthur L. Published: SAGE Publications, 1935 Published in: Music Educators Journal, 21 (1935) 4, Seite 65 Language: Not determined DOI: 10.2307/3384631 ISSN: 0027-4321 Keywords: General Medicine Origination: Footnote: