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Proceedings of the National Academy of Sciences Issues Research Articles in Sept. 14, 2021 Edition
September 02, 2021
WASHINGTON, Sept. 2 -- The Proceedings of the National Academy of Sciences, a peer-reviewed scientific journal, published research articles on the following topics in its Sept. 14, 2021 edition:

Physical Sciences:

* Short-range exposure to airborne virus transmission and current guidelines

Biological Sciences:

* Global patterns of raptor distribution and protected areas optimal selection to reduce the extinction crises

* Profound . . .

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