Friedman Milton and Kuznets Simon. <br/><br/>
Income Form Independent Professional Practice  Textual Documents 

 - Ist edition 1954. 
 - New York :  National Bureau of Economic Research,  1954. 
 - xxxiii;594p.:  02051. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Statistics,Income and The Location of Practice,Temporal Changes in Income.