Circulation in macroeconomics
<a href="//commons.wikimedia.org/wiki/User:Beyond_silence" title="User:Beyond silence">Beyond silence</a> /svg by <a href="//commons.wikimedia.org/wiki/User:LadyofHats" title="User:LadyofHats">LadyofHats</a>
2007
<span class="int-own-work" lang="en">Own work</span>