1. Lawson , T. B. 1978 Venturi design parameters for air injection into a foam fractionation system Unpublished Ph.D. Thesis Agricultural Engineering Department, University of Maryland
2. Lomax , K. M. 1976 Nitrification with waste pretreatment on a closed cycle catfish culture system Unpublished Ph.D. Thesis Agricultural Engineering Department, University of Maryland
3. Lush , J. 1976 Orifice aspirator as a foam fractionation air injection system: design effects Unpublished M.S. Thesis Agricultural Engineering Department, University of Maryland