点击下载：哥伦比亚商学院：Multi-product Firms and Trade Liberalization（Randomized Experiments in International Trade）
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Randomized Experiments in International trade August 2018 Amit Khandelwal Columbia Business schoolRandomized Experiments in International Trade August 2018 Amit Khandelwal Columbia Business School 1
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点击下载：哥伦比亚商学院：Multi-product Firms and Trade Liberalization（Randomized Experiments in International Trade）
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