Provisional guidelines on statistics of international tourism 

 - New York  United Nations          1978 
 - vi,52p.  cm. 
 - Statistical papers series; 62 .
<br/><br/> Bibliography : P.25 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>U8.1N45.N78s, L8/UN