Statistics of migration :  definitions, methods, classifications. 

 - Geneva,  1932. 
 - iv, 152 p.  24 cm. 
 - Studies and reports, series N, Statistics,  no. 18 .
<br/><br/> At head of title: International Labour Office ... 
<br/><br/><label>LCCN: </label>l  32000066  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Emigration and immigration--Statistics.<br/>Statistics.
<br/><br/><label>LC Class. No.: </label>HD4813  / .I4 Ser. N, no. 18