sas programming II:manipulating data with the data step

thanks for sharing. <br/>

<p>好东西，急需中，谢谢了。呵呵</p>

<p>谢谢分享！</p>

very good. thank you very much.

thank you very much

<p>谢谢楼主，非常好的资料 </p>

<p>3q,十分感谢</p>

<p>真好，免费的！感谢楼主的慷慨！</p>

好象扣我了一个论坛币,而且两个文件怎么是一样的,我都下了,就扣了2个论坛币了,不过,还是觉得值.多谢共享!