Williams, John frey50
Projects with Time John Williams; Illustrated by Malcolm S. Walker - Milwaukee Gareth Stevens 1990 - 32 p. - Simple science projects .
Explores the concepts of time through avariety of projects involving sundials, water clocks, and other time-keeping devices.
0836807707
Clocks and watches
Time
experiments
j529.076 Wil 25
Projects with Time John Williams; Illustrated by Malcolm S. Walker - Milwaukee Gareth Stevens 1990 - 32 p. - Simple science projects .
Explores the concepts of time through avariety of projects involving sundials, water clocks, and other time-keeping devices.
0836807707
Clocks and watches
Time
experiments
j529.076 Wil 25