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Scientific American

March 13, 1915

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Panama Canal Open to Large Ocean Liners, The First National Bird Census and more

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Scientific American Magazine Vol 112 Issue 11This article was originally published with the title “Panama Canal Open to Large Ocean Liners, The First National Bird Census, and more” in Scientific American Magazine Vol. 112 No. 11 (), p. 243
doi:10.1038/scientificamerican03131915-243
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