R. C. Hansen

Research and outreach efforts sustain Ohio hydroponic industry.

Peter P. Ling, Harold M. Keener, B. Fausey, 2009 .

Development and Operation of a Hydroponic Lettuce Research Laboratory

Harold M. Keener, R. C. Hansen, Jeff Balduff, 2010 .

Success with Natural-Air Grain Drying

Harold M. Keener, R. C. Hansen, Eli Troyer, 2008 .

A Study of Controllable Factors that have an Effect on Lettuce Production in a Hydroponic Lettuce Growing System

Harold M. Keener, R. C. Hansen, Jeff Balduff, 2009 .