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Scientific American

September 1, 1941

1 min read

Telltale Tracks

Human Footprints in Hardened Rock in Central America Reveal a Dramatic Flight

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This article was originally published with the title “Telltale Tracks” in Scientific American Magazine Vol. 165 No. 3 (September 1941), p. 134
doi:10.1038/scientificamerican0941-134

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