Blumberg, N A <br/><br/>
Advertising by doctors?  [electronic resource] 

 -  South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde  Dec 1978 
 - 1000 p.  digital 
<br/><br/> Publication Type: Letter 
<br/><br/><label>ISSN: </label>0256-9574 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Advertising