Things that balance (Construction forces discovery library)
Whitehouse, Patricia, 1958-
Things that balance (Construction forces discovery library) - Rourke, Pub., c2007 - p. cm.
Explains what it means to balance, and looks at some of the things that balance on a construction site, including a sawhorse, ladder, scissor lift, and others.
1600441947
531
Things that balance (Construction forces discovery library) - Rourke, Pub., c2007 - p. cm.
Explains what it means to balance, and looks at some of the things that balance on a construction site, including a sawhorse, ladder, scissor lift, and others.
1600441947
531