Fenner, F <br/><br/>
Smallpox and its eradication 

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 - Geneva  World Health Organisation  1988 
 - xvi, 1460p.   
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<br/><br/><label>ISBN: </label>
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<br/><br/><label>Subjects--Index Terms: </label>smallpox  eradication 
<br/><br/><label>Dewey Class. No.: </label>616.912-08