Langa, Harry. <br/><br/>
Relative analgesia in dental practice; 

 - Philadelphia,  Saunders,  1968. 
 - 283 p.  ill. 
<br/><br/><label>ISBN: </label>072165620 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Nitrous oxide.<br/>Anesthesia in dentistry.
<br/><br/><label>LC Class. No.: </label>MED RK510  / L3