Boitel, R H <br/><br/>
["You are politely requested not to smoke here"].  [electronic resource] 

 -  Schweizerische Monatsschrift fur Zahnheilkunde = Revue mensuelle suisse d'odonto-stomatologie  Jul 1983 
 - 537-8 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-7702 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Smoking Prevention<br/>Switzerland