Tracer gas as an aid in mine ventilation analysis /
by E.D. Thimons and F.N. Kissell.

APA Citation

Thimons, E. D., Kissell, F. N., Pittsburgh Mining and Safety Research Center., United States. Bureau of Mines. (1974). Tracer gas as an aid in mine ventilation analysis. [Washington, D.C.]: U.S. Bureau of Mines.

MLA Citation

Thimons, Edward D, Fred N Kissell, Pittsburgh Mining and Safety Research Center, and United States. Bureau of Mines. Tracer Gas As an Aid In Mine Ventilation Analysis. [Washington, D.C.]: U.S. Bureau of Mines, 1974.