Coal preparation
Leonard Joseph W., Hardinge Byron C.Kniha
Citace v seznamu literatury:
LEONARD, Joseph W. a HARDINGE, Byron C. Coal preparation. 5th ed. Littleton, Colo.: Society for Mining, Metallurgy, and Exploration, 1991. Dostupné také z: https://proxy.k.utb.cz/login?url=http://app.knovel.com/hotlink/toc/id:kpCPE00011/coal_preparation_5th_edition.