The "Türkenkalender" (1454) attributed to Gutenberg and the Strasbourg lunation tracts / Eckehard Simon.

Cambridge, Mass. : Medieval Academy of America, [1988], ©1988.

xii, 113 pages, 1 leaf of plates : facsimiles ; 24 cm.

Includes bibliographical references and index.

Electronic text and image data. Ann Arbor, Mich. : University of Michigan, Michigan Publishing, 2014. Includes both TIFF files and keyword searchable text. ([ACLS Humanities E-Book]) Mode of access: Intranet.