Ivory diptych sundials, 1570-1750 /
Lloyd, Steven A.
Harvard University.Collection of Historical Scientific Instruments.
Cambridge, Mass. ; London : Collection of Historical Scientific Instruments, Harvard University : distributed by Harvard University Press,
1992.
Catalog of an exhibition held in Houghton Rare Book Library, Harvard, Sept. 24-Oct. 31, 1990
Includes bibliographical references (p. 162-163) and index
Sundials
Sundials
Diptychs