Clocks, from shadow to atom
By: by Kathryn Kilby Borland and Helen Ross Speicher illustrated by Robert Addison.
Contributors: Speicher, Helen Ross.; Addison, Robert.
Publisher: World's Work
Published: 1970
Place of publication: Tadworth
Language: eng
Number of pages: 64
Subjects: Clocks and watches -- History.
Notes: Originally published, Chicago: Follett, 1969.