1. An essay on the opium trade: including a sketch of its history, extent, effects, etc., as carried on in India and China Author(s): Allen, Nathan, 1813-1889 Publication: Boston : Jewett, 1850 Subject(s): Opium -- supply & distributionCommerceIndiaChina
2. An essay on the opium trade, including a sketch of its history, extent, effects, etc., as carried on in India and China Author(s): Allen, Nathan, 1813-1889 Publication: Lowell : James P. Walker, 1853 Subject(s): Opium -- historyChinaIndia
