Lacasse, Norman L. (1966). The role of auxin in double band formation in chestnut oaks infected with Ceratocystis fagacearum. Doctoral thesis.

Lalancette, Norman. (1982). Comparison of management strategies by quantification of apple powdery mildew epidemics. Master's thesis.

Lalancette, Norman. (1985). Selection and fitness of benomyl-sensitive and benomyl-resistant subpopulations of Venturia inaequalis on apple. Doctoral thesis.

Lambert, David Howell. (1973). Population studies of Verticillium species associated with Agaricus bisporus (Lange) Imbach. Master's thesis.

Lambert, David Howell. (1979). Mycorrhizae establishment for strip mine revegetation. Doctoral thesis.

Lanze, Carla E. (2015). Characterization of Pythium and Phytopythium species frequently found in irrigation water. Master's thesis.

Lathrop, Larry Douglas. (1979). Relationships among spectral reflectance and selected tomato (Lycopersicon esculentum) canopy variables. Master's thesis.

Latin, Richard X. (1980). Factors in potato that reduce the rate of epidemic increase of potato late blight. Doctoral thesis.

Lawrence, Ellen Nan Briskin. (1975). Histopathology of two inbred lines of sweet corn (Zea mays) naturally infected with fusarium moniliforme and fusarium oxysporum. Master's thesis.

Lawrence, Ellen Briskin. (1982). The nature and cause of the pionnotal variants in Gibberella Baccata (Wallr.) Sacc. (Fusarium lateritium (nees) emend. Snyd. et Hans.) and their pathogenicity on Celosia argentea L. and Amaranthus tricolor L. Doctoral thesis.

Lipschutz, Leslie. (1965). The resistance of zinnia species to alternaria zinniae pape. Master's thesis.

Liu, Kang-chien. (1972). Phytohemagglutinins and hemolysins in potato plants and their relations to virus infection. Doctoral thesis.

Lockard, John David. (1962). An investigation of the metabolic gases produced by the cultivated mushroom "Agaricus bisporus" (Lange) Sing. Doctoral thesis.

Long, Robert. (1987). Tree-ring analysis of second-growth forests in Pennsylvania : evaluation of dendroclimatic potential and atmospheric pollution effects on tree growth. Doctoral thesis.

Lopez, Melencio E. (1962). The nutrition of "Fusarium roseum" (Link) Snyder and Hansen. Master's thesis.

Lotstein, Richard Jan. (1982). Effects of SO2 on tomato fruit quality and plant susceptibility to Alternaria solani. Master's thesis.

Loughner, Daniel Louis. (1980). Factors influencing the efficacy of fungicides used for the control of Rhizoctonia Cerealis incitant of cool weather brown patch disease. Master's thesis.