Comets (Let'S-Read-And-Find-Out Science Book)

Comets (Let'S-Read-And-Find-Out Science Book)
sku: COM9780690044140USED
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$4.70
Shipping from: Canada
   Description
Explains what comets are, how they are formed, and how their unusual orbits bring them into earth's view at predictable intervals, with a special focus on Halley's comet.
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