[Investigation of X-ray apparatus in dental clinics in Yokosuka and Suntoh areas].
Saito
Y
Y
Kanno
M
M
Kashima
I
I
Higashi
T
T
D006801:Humans; D007564:Japan; D011835:Radiation Protection; D011861:Radiography, Dental / Q000295:instrumentation* / Q000379:methods; D014962:X-Ray Film