title: Determination of small mass differences in roentgenography. 3. Experimental investigations with a dental roentgen apparatus.
mesh_terms: D015502:Absorptiometry, Photon; D000535:Aluminum; D008433:Mathematics; D008722:Methods; D011829:Radiation Dosage; D011861:Radiography, Dental; D012542:Scattering, Radiation; D013679:Technology, Radiologic
chemical_list: D000535:Aluminum