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24 records were found.

	Hahn, G.G. (1925). Phomopsis juniperovora and Closely Related Strains on Conifers. USA, Washington DC; USDA, Bureau of Plant Industry, Office of Investigations in Forest Pathology.
	Hahn, G.G. (1928). The inoculation of Pacific northwestern Ribes with Cronartium ribicola and C. occidentale. Journal of Agricultural Research 37: 663-663, 3 figs.
	Hahn, G.G. (1930). A physiological method of distinguishing Cronartium ribicola and C. occidentale in the uredinal stages. Journal of Agricultural Research 40: 105-120.
	Hahn, G.G. (1933). An undescribed Phomopsis from Douglas fir on the Pacific coast. Mycologia 25 (5): 369-375.
	Hahn, G.G. (1943). Taxonomy, distribution, and pathology of Phomopsis occulta and P. juniperovora. Mycologia 35 (1): 112-129, 2 pls.
	Hahn, G.G. (1947). Analysis of Peck’s types of Meliola balsamicola and Asterina nuda. Mycologia 39 (4): 479-490, 2 figs.
	Hahn, G.G. (1957). A new species of Phacidiella causing the so-called Phomopsis disease of conifers. Mycologia 49 (2): 226-239, 2 figs.
	Hahn, G.G. (1920). Phomopsis junipivora, a new species causing blight of nursery cedars. Phytopathology 10: 249-253, 1 fig.
	Hahn, G.G. (1926). Phomopsis juniperivora and closely related strains. Phytopathology 16: 899-914, 1 fig., tabs LII-LIV.
	Hahn, G.G. (1927). Fungi as an international problem. Transactions and Proceedings of the Botanical Society of Edinburgh 29: 342-348.
	Hahn, G.G. (1929). Preliminary report on a variety of red currant resistant to Weymouth pine rust Cronartium). Transactions and Proceedings of the Botanical Society of Edinburgh 30: 137-146, 2 tabs.
	Hahn, G.G. (1928). Phomopsis conorum (Sacc.) Died. - an old fungus of the Douglas fir and other conifers. Transactions of the British Mycological Society 13 (3-4): 278-286, tabs XXII-XXIII.
	Hahn, G.G. (1930). Life-history studies of the species of Phomopsis occurring on conifers. Part I. Transactions of the British Mycological Society 15 (1-2): 32-93, 29 figs, 3 plates.
	Hahn, G.G.; Ayers, T.T. (1934). Dasyscyphae on conifers in North America. I. The large-spored white-excipled species. Mycologia 26 (1): 73-101.
	Hahn, G.G.; Ayers, T.T. (1934). Dasyscyphae on conifers in North America. II. D. ellisiana. Mycologia 26 (2): 167-180.
	Hahn, G.G.; Ayers, T.T. (1934). Dasyscyphae on conifers in North America. III. Dasyscypha pini. Mycologia 26 (6): 479-501.
	Hahn, G.G.; Hartley, C.; Pierce, R.G. (1917). A nursery blight of cedars. Journal of Agricultural Research 10: 533-540, tabs 60-61.
	Hartley, C.; Hahn, G.G. (1920). Notes on some disease of aspen. Phytopathology 10: 141-147, fig. 3.
	Hartley, C.; Pierce, R.G.; Hahn, G.G. (1919). Moulding of snow smothered nursery stock. Phytopathology 9: 521-531.
	Hedgcock, G.G.; Hahn, G.G. (1922). Two important pine cone rusts and their new cronartial stages. Part I Cronartium strobilinum (Arth.) Hedgc. and Hahn comb. nov. Phytopathology 12: 109-116, tab. 5.
	Hedgcock, G.G.; Hunt, N.R.; Hahn, G.G. (1920). New species and relationships in the genus Coleosporium. Mycologia 12 (4): 182-198.
	Wilson, M.; Hahn, G.G. (1929). The history and distribution of Phomopsis pseudotsugae in Europe. Phytopathology 19: 979-992, 2 figs.
	Wilson, M.; Hahn, G.G. (1928). The identity of Phoma pitya Sacc. Phoma abietina Hart. and their relation to Phomopsis pseudotsugae Wilson. Transactions of the British Mycological Society 13 (3-4): 261-278, tabs xviii-xxi.
	Wilson, M.; Hahn, G.G. (1928). The identity of Phoma pitya Sacc., Phoma abietina Hart. and their relation to Phomopsis pseudotsugae Wilson. Transactions of the British Mycological Society 13 (3-4): 261-278, 9 plates.