Matches in Library of Congress for { ?s ?p Explains in simple text and illustrations what is known about the force of gravity.. }
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- 70101922 abstract "Explains in simple text and illustrations what is known about the force of gravity.".
- 85048247 abstract "Explains in simple text and illustrations what is known about the force of gravity.".
- 70101922 description "Explains in simple text and illustrations what is known about the force of gravity.".
- 85048247 description "Explains in simple text and illustrations what is known about the force of gravity.".