Ampian, Sarkis G.
Crystalline silica overview : occurence and analysis / by Sarkis G. Ampian and Robert L. Virta. - [Washington, D.C.] : U.S. Dept. of the Interior, 1992. - ii, 27 p. : ill. - Information circular / Bureau of Mines, U.S. Department of the Interior ; 9317 . - Information circular (U.S. Department of the Interior. 9317 .
92045200
Silica.
Silica--Toxicology.
X-rays--Diffraction.
Crystalline silica overview : occurence and analysis / by Sarkis G. Ampian and Robert L. Virta. - [Washington, D.C.] : U.S. Dept. of the Interior, 1992. - ii, 27 p. : ill. - Information circular / Bureau of Mines, U.S. Department of the Interior ; 9317 . - Information circular (U.S. Department of the Interior. 9317 .
92045200
Silica.
Silica--Toxicology.
X-rays--Diffraction.