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7
Memoirs of the National Academy of Sciences. Volume XXII
United States congressional serial set ; serial set no. 8418;Senate document / 68th Congress, 2nd session. Senate ; no. 231
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15
Annual report of the Board of Regents of the Smithsonian In..
United States congressional serial set ; serial set no. 7893;House document / 66th Congress, 3rd session. House ; no. 853