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Treaty relating to the Use of Submarines and Noxious Gases in Warfare. Washington, 6 February 1922.
Art. 7. The Government of the United States will further transmit to each of the non-Signatory Powers a duly certified copy of the present Treaty and invite its adherence thereto.
Any non-Signatory Power may adhere to the present Treaty by communicating an instrument of adherence to the Government of the United States, which will thereupon transmit to each of the Signatory and Adhering Powers a certified copy of each instrument of adherence.
In faith whereof, the above named Plenipotentiaries have signed the present Treaty.
Done at the City of Washington, the sixth day of February, one thousand nine hundred and twenty-two.
(Here follow signatures)