Concording U.S. Harmonized System Categories Over Time
收藏NBER2009-04-01 更新2025-01-04 收录
下载链接：
https://www.nber.org/papers/w14837
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资源简介：
This paper: outlines an algorithm for concording U.S. ten-digit Harmonized System export and import codes over time; describes the concordances we construct for 1989 to 2004; and provides Stata code that can be used to construct similar concordances for arbitrary beginning and ending years from 1989
提供机构：
美国国家经济研究局
创建时间：
2009-04-01
