Simpson, Herbert Downs,  1879- <br/><br/>
Health protection,  a study of pre-payment medical service plans, 
by Herbert D. Simpson ... 
 - Chicago,  The National Physicians' Committee for the Extension of Medical Service  [1946] 
 - 78 p.  28 cm. 
<br/><br/><label>LCCN: </label>sg 46000287  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Health insurance.<br/>Health maintenance organizations--United States.
<br/><br/><label>LC Class. No.: </label>R723.5  / .S5 
<br/><br/><label>Dewey Class. No.: </label>614.2