看到好玩的地圖，就順手貼上來了
Immigration and Jobs: Where U.S. Workers Come From
http://www.nytimes.com/interactive/2009/04/07/us/20090407
-immigration-occupation.html
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美國的外勞來源 - 美國
· 2009-04-15Table of Contents
看到好玩的地圖，就順手貼上來了
Immigration and Jobs: Where U.S. Workers Come From
http://www.nytimes.com/interactive/2009/04/07/us/20090407
-immigration-occupation.html
--
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