International travel and health :  Situation as on 1 January 2009 / 
World Health Organization. 
 - Geneva :  World Health Organization,  2009. 
 - ix, 240 p. :  ill. ;  22 cm. 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>978-92-4-158042-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communicable disease control<br/>Travel<br/>Vaccination--standards<br/>Risk factors