CHVAPIL, M [A new method for the determination of fibrogenic properties of silica dust with the aid of the frog (Rana esculenta) test]. [electronic resource] - Pracovni lekarstvi Jan 1962 - 15-9 p. digital Publication Type: Journal Article ISSN: 0032-6291 Subjects--Topical Terms: AnimalsDustMineralsRana esculentaRanidaeSilicon Dioxide--toxicity