Media type: E-Article Title: Still More on the Mapleson Cylinder Contributor: CRUTCHFIELD, WILL Published: Oxford University Press (OUP), 1987 Published in: The Opera Quarterly Extent: 37-45 Language: English DOI: 10.1093/oq/5.4.37 ISSN: 0736-0053; 1476-2870 Keywords: Music Footnote: