Automation of a diatomaceous earth water treatment system, Southern Indiana Forage Farm /
Albrecht, K. J.,author.
Monke, E. J.(Edwin John),1925-author.
Dale, A. C.(Alvin Cecil),1913-author.
Wilke, H. R.,author.
Fassnacht, G. G.,author.
Purdue University.Agricultural Experiment Station.
Caption title.
"May 1962, Project 939."
Water