Yancey, H F, R E. Zane, Walter Wood, and J T. H. Cannarella. Flocculation As an Aid in the Clarification of Coal Washery Water. Washington, D.C.: U.S. Department of the Interior, Bureau of Mines, 1940.

Yancey, H F, R E. Zane, Walter Wood, and J T. H. Cannarella. Flocculation As an Aid in the Clarification of Coal Washery Water. Washington, D.C.: U.S. Department of the Interior, Bureau of Mines, 1940.