Labor mobility and population in agriculture / 
Iowa State University. Center for Agricultural and Economic Development. 
 - Iowa :  Iowa State University Press ,  c1961 
 - vii, 231 p. :  ill. ;  22 cm. 
<br/><br/>Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural laborers--United States.<br/>Migrant labor--United States.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Rural conditions.
<br/><br/><label>Dewey Class. No.: </label>331.763  / IOL 1961