【作者(必填)】
John c. Halttwanger
【文题(必填)】
Productivity differences across employers: the roles of employer size, age, and human capital
【年份(必填)】
The American Economic Review,1999 Vol. 89, No. 2
【全文链接或数据库名称(选填)】
http://www.jstor.org/discover/10.2307/117087?uid=3737800&uid=2129&uid=2&uid=70&uid=4&sid=47698743732097