O'Brien, Richard C. <br/><br/>
Dental radiography :  an introduction for dental hygienists and assistants / 
Richard C. O'Brien. 
 - 4th ed. 
 - Philadelphia :  Saunders,  1982. 
 - ix, 296 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0721668879 
<br/><br/><label>LCCN: </label>81050054  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teeth--Radiography.<br/>Radiography, Dental.
<br/><br/><label>LC Class. No.: </label>RK309  / .O2 1982 
<br/><br/><label>Dewey Class. No.: </label>617.6/07572 
<br/><br/><label>National Library of Medicine Call No.: </label>WN 230 013d