Clay, Karen <br/><br/>
Pollution, infectious disease and mortality :  Evidence from the 1918 Spanish influenza pandemic / 
Karen Clay, Joshua Lewis and Edson Severnini 
 - Cambridge  NBER  2015 
 - 40p 
 - NBER Working Paper ;  21635 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>NBERWP 21635<br/>E15720.pdf