Spark-source mass spectrometer investigation of coal particles and coal ash /
by T. Kessler, A.G. Sharkey, Jr., and R.A. Friedel.

APA Citation

Kessler, T., Friedel, R. A.., Sharkey, A. G. (Andrew G.)., United States. Bureau of Mines., United States. Bureau of Mines. Respirable Dust Research Program., Pittsburgh Energy Research Center. (1971). Spark-source mass spectrometer investigation of coal particles and coal ash. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines .

MLA Citation

Pittsburgh Energy Research Center, et al.. Spark-source Mass Spectrometer Investigation of Coal Particles And Coal Ash. [Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines , 1971.