[Some features of silicosis and silicotuberculosis in Bulgaria].
D001203:Ascomycota; D002031:Bulgaria; D006801:Humans; D012829:Silicosis / Q000453:epidemiology*; D012830:Silicotuberculosis; D014376:Tuberculosis; D014397:Tuberculosis, Pulmonary
SILICOSIS/epidemiology; TUBERCULOSIS, PULMONARY
Nekotorye osobennosti silikoza i siliko-tuberkuleza v Bolgarii.