Matches in Library of Congress for { ?s ?p A simple explanation of how a lever works.. }
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- 77007632 abstract "A simple explanation of how a lever works.".
- 78021175 abstract "A simple explanation of how a lever works.".
- 78026992 abstract "A simple explanation of how a lever works.".
- 77007632 description "A simple explanation of how a lever works.".
- 78021175 description "A simple explanation of how a lever works.".
- 78026992 description "A simple explanation of how a lever works.".