Machines at Work

Machines at Work

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Description

An introduction to machines, from levers and pulleys to compound machinery, which includes instructions for activities and projects to illustrate the principlesshow more

Product details

  • Hardback | 32 pages
  • 216 x 272 x 9mm | 408g
  • Franklin Watts
  • United States
  • English
  • 0531142434
  • 9780531142431