References

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Journal Article
Huai W-x, Tian G, Hansen EM, Zhao W-x, Goheen EM, Grünwald NJ, Cheng C. Identification of Phytophthora species baited and isolated from forest soil and streams in northwestern Yunnan province, China Belbahri L. Forest Pathology. 2013 :n/a - n/a.
Hamm PB, Hansen EM. Identification of Phytophthora spp. known to attack conifers in the Pacific Northwest. Northwest Sci. 1987 ;61:103-109.
Pratt RG, Roth LF, Hansen EM, Ostrofsky WD. Identity and pathogenicity of species of Phytophthora causing root rot of Douglas-fir in the Pacific Northwest. Phytopathology. 1976 ;66:710-714.
Hamm PB, Hansen EM. Improved method for isolating Phytophthora lateralis from soil. Plant disease. 1984 ;68:517-519.
Hansen EM, Hamm PB, Julis AJ, Roth LF. Isolation, incidence and management of Phytophthora in forest tree nurseries in the Pacific Northwest [USA]. Plant Disease Reporter. 1979 ;63:607-611.