https://en.wikipedia.org/wiki/The_Gods_Themselves
The Gods Themselves - Wikipedia
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https://www.abebooks.com/9780553288100/Gods-Asimov-Isaac-0553288105/plp
The Gods Themselves: A Novel - Asimov, Isaac: 9780553288100 - AbeBooks
In the twenty-second century Earth obtains limitless, free energy from a source science little understands: an exchange between Earth and a parallel universe,...
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