Taylor, F. M.  1855-1932. <br/><br/>
Key to problems in Principles of economics. 

 - (8th ed.)  by F. M. Taylor,Ph. D. 
 - New York,  Ronald Press Company,  1921. 
 - iii, 88 p.  22 cm. 
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<br/><br/><label>LCCN: </label>ca 21000480  
<br/><br/><label>LC Class. No.: </label>HB171.5  / .T215