<DIV class=O style="tab-stops: .3645in .9375in" v:shape="_x0000_s1026">
<DIV><B></B></DIV>
<DIV><B>Principles of Economics</B><B> </B></DIV>
<DIV><STRONG>Second Edition </STRONG> </DIV>
<DIV><B>by</B><B> </B></DIV>
<DIV><B>N. Gregory Mankiw</B><B> </B></DIV>
<DIV></DIV></DIV>
<P><FONT color=#f70938>ppt</FONT></P><br><br>

[此贴子已经被作者于2007-5-23 21:16:59编辑过]