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Exceptional Mastodon Bones Found, Holes in Submarines Patched Under Water and more

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Scientific American Magazine Vol 142 Issue 2This article was originally published with the title “Exceptional Mastodon Bones Found, Holes in Submarines Patched Under Water, and more” in Scientific American Magazine Vol. 142 No. 2 (), p. 146
doi:10.1038/scientificamerican0230-146