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What Is A Screw? (Turtleback School & Library Binding Edition)
What Is A Screw - Turtleback School & Library Binding Edition Author:Lloyd G. Douglas THIS EDITION IS INTENDED FOR USE IN SCHOOLS AND LIBRARIES ONLY. Examples of how screws are used everyday to make work easier includes a screw that will be used for hanging a shelf on the wall and a screw that enables a stool seat to rotate.