DC -- National Academy of Sciences Bldg:
[1] NAS_210327_05.JPG
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[2] NAS_210327_11.JPG
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[3] NAS_210327_15.JPG
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[4] NAS_210327_21.JPG
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[5] NAS_210327_26.JPG
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[6] NAS_210327_29.JPG
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[7] NAS_210327_34.JPG
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