Sources and characteristics of quartz dust in coal mines /
by J.A. Organiscak, S.J. Page, and R.A. Jankowski.
- Washington, DC : U.S. Dept. of the Interior, Bureau of Mines, 1990.
- ii, 21 p. : ill.
- Bureau of Mines information circular .
- Information ciruclar (United States. Bureau of Mines) .