NMLP P-004049 · True-first precedence · minted 2026-07-04

Billions and Billions: Thoughts on Life and Death at the Brink of the Millennium

Carl Sagan · Random House · 1997

US true first (Random House, 1997), Sagan's last book, completed after his death in December 1996.

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New Mexico Literacy Project — True-first precedence NMLP P-004049 for "Billions and Billions: Thoughts on Life and Death at the Brink of the Millennium" by Carl Sagan (https://newmexicoliteracyproject.org/id/point/p-004049, CC BY 4.0, dataset DOI 10.5281/zenodo.21184548).