LEONARD, J. W. (1068). Coal preparation - Joseph W. Leonard, David R. Mitchell. American Institute of mining.
Chicago Style (17th ed.) CitationLEONARD, Joseph W. Coal Preparation - Joseph W. Leonard, David R. Mitchell. American Institute of mining, 1068.
MLA (8th ed.) CitationLEONARD, Joseph W. Coal Preparation - Joseph W. Leonard, David R. Mitchell. American Institute of mining, 1068.
Warning: These citations may not always be 100% accurate.