许晓冬2019-09-252019-09-252016-05-172014-11-20http://hdl.handle.net/20.500.12424/539096chiWith permission of the license/copyright holder传教士鸦片中美贸易政策商业扩张missionaryopiumSino-America tradepolicybusiness expansion传教士与早期中美贸易关系 [Missionaries and Early Sino-America Trade Relationship]Article