Problems of the immigration service;  papers presented at a conference of commissioners and district directors of immigration, Washington, D.C., January, 1929 ...  

 - Washington,  U.S. Govt. print. off.,  1929. 
 - 1 p.l., 30 p.  23 cm. 
<br/><br/><label>LCCN: </label>l  29000063  
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States--Emigration and immigration.
<br/><br/><label>LC Class. No.: </label>JV6481 1929