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13 records were found.

	Leach, J.G. (1923). The parasitism of Colletotrichum lindemuthianum. Minnesota Agricultural Experiment Station Technical Bulletin 4: 1-41.
	Leach, J.G. (1919). The parasitism of Puccinia graminis tritici Erikss. and Henn. and Puccinia graminis tritici-compacti Stakm. and Piem. Phytopathology 9: 59-88, 3 tabs.
	Leach, J.G. (1926). The relation of the seed-corn maggot to the spread and development of potato black-leg in Minnesota. Phytopathology 16 (3): 149-176.
	Leach, J.G. (1927). The nature of seed-piece transmission, of potato black-leg. Phytopathology 17 (3): 155-160.
	Leach, J.G. (1927). The relation of insects and weather to the development of heart rot of celery. Phytopathology 17: 663-667.
	Leach, J.G. (1929). The effect of grafting on resistance, and susceptibility on beans to Colletotrichum lindemuthianum. Phytopathology 19: 675-877, 1 fig.
	Leach, J.G. (1930). Survival of the potato black-leg pathogen in the soil and some factors influencing infection. Phytopathology 20 (1): 127.
	Leach, J.G. (1930). Potato black-leg. The survival of the pathogen in the soil and some factors influencing infection. Phytopathology 20 (3): 215-228.
	Leach, J.G. (1930). The identity of the potato black-leg pathogen. Phytopathology 20: 743-751.
	Leach, J.G. (1925). The seed-corn maggot and potato black-leg. Science N.S 61: 120.
	Leach, J.G.; Gilbert, H.C. (1926). Diseases of head lettuce in Minnesota. Minnesota Agricultural Experiment Station Special Bulletin 1926: 10 pp.
	Leach, J.G.; Orr, L.W.; Christensen, C. (1934). The interrelationships of bark beetles and blue-staining fungi in felled Norway pine timber. Journal of Agricultural Research 49 (4): 315-341.
	Stakman, E.C.; Levine, M.N.; Leach, J.G. (1919). New biological forms of Puccinia graminis. Journal of Agricultural Research 16: 103-105.