Vaccination certificate requirements and health advice for international travel:   Situation as on 1 January 1987 
/ World Health Organization 
 - Geneva:   World Health Organization,   1987 
 - 83p. 
<br/><br/><label>ISBN: </label>9241580127 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Law and legislation
<br/><br/><label>Universal Decimal Class. No.: </label>615.371:910.4(100)  / L0;M7