Reach into the distant past and discover the fascinating origins of the advanced technology that allows future Earth inhabitants to journey between parallel universes at their whim. This entry in H. Beam Piper's popular Paratime series homes in on the Martian colonists who visited Earth hundreds of thousands of years ago.
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- Great reads without the wait!
- Everyone Reads: Spanish Titles for Young Readers
- Adapted for Young Readers
- Noteworthy Reads
- Women's History Month
- Calling the Shots
- Our Favorite Sleuths
- Curl Up with a Cozy Read
- See all audiobooks collections