http://www.macalester.edu/resear ... sc/SITC/sitc_r2.prn

Goods[Revised July 2007!]
Download: This file contains a categorization of SITC Rev. 2 industries according to three possible types: differentiated products, reference priced, or homogeneous goods.
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Description of File
Column 1: 4-digit SITC code
Column 2: "Conservative" classification
Column 3: "Liberal" classification
Coding Scheme
w=goods traded on an organized exchange (homogeneous goods)
r=reference priced
n=differentiated products


Source: Rauch, James E. "Networks Versus Markets in International Trade," Journal of International Economics 48(1) (June 1999): 7-35.

没看懂什么东东

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谢谢