Ross, Robert Cooke,  1891-1979 <br/><br/>
An introduction to agricultural economics/ 
Robert Cooke Ross 
 - New York:  McGraw-Hill,  1951 
 - 414 p.:  maps, diagrs. ;  24 cm. 
<br/><br/>Includes bibliography. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture--Economic aspects<br/>Agriculture--Economic aspects--United States