Dental X-ray protection. 

 - Washington :  NCRP,  1970. 
 - vi, 50 p. :  tabla, diagr. 
 - Report, no.<35> .
 - Estados Unidos. National council on radiation protection and measurements .
 - Report, no.<35> .
<br/><br/> Recommendations of the NCRP  Apéndices y bibliografía: p.24-39 
<br/><br/><label>ISSN: </label>0083-209X 
<br/><br/><label>Standard No.: </label>NCRP-REPORT-35