Steffora, Tracey.

Clocks and calendars / Tracey Steffora. - Chicago : Heinemann Library, c2011. - 24 p. : col. ill. ; 18 x 21 cm. - Measuring time. Acorn. .

Includes index.

What is time -- Clocks -- Calendars -- Clocks and calendars.

"Level H."--P. [4] of cover. GRL: H

ISBN: 9781432957841

LCCN: 2010028873

Subjects--Topical Terms:
Time.
Clocks and watches.
Calendars.
Time measurements.

LC Class. No.: QB209.5 / .S744 2011

Dewey Class. No.: 529/.3