[ON X-RAY STANDARDS IN PNEUMOCONIOSIS].
D006801:Humans; D011009:Pneumoconiosis; D013902:Radiography, Thoracic; D011871:Radiology; D013679:Technology, Radiologic; D014965:X-Rays
PNEUMOCONIOSIS; TECHNOLOGY, RADIOLOGIC; THORACIC RADIOGRAPHY
O RENTGENOLOGICHESKIKH 'ETALONAKH PRI PNEVMOKONIOZAKH.