一本高级计量经济学教材----Free now!

谢了

Thanks. It is very good book.

Thank you very much~

这本书的Hausman-Dubin-Wu test 解释的很清楚，通过这个TEST 你可以知道是否要用IV ESTIMATOR，fiexed effect model or random effect model, which one is better. And some more general uses

many thanks

不错！

好呀，就是买不了

thank you very much!

这本书是什么时候出的啊？

嗯，好好学习一下。谢谢。