Opium. Exportation of opium, hearings before subcommittee on H. R. 14500, to amend sec. 6 of act approved Jan. 17, 1914, [to amend] act to prohibit importation and use of opium for other than medicinal purposes, approved Feb. 9, 1909; Dec. 8, 1920-Jan. 4, 1921.

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