TTwo new forest tree rusts from the NorthwestTwo new forest tree rusts from the Northwestde H. S. JacksonEdiciones (1)Two new forest tree rusts from the Northwest (1917)inglésMás obras de H. S. JacksonFFire blight of pear and appleFire blight of pear and appleHHow and when to spray the orchardHow and when to spray the orchardOOpuscula Jacksoniana, Uredinales and UstilaginalesOpuscula Jacksoniana, Uredinales and Ustilaginales
OOpuscula Jacksoniana, Uredinales and UstilaginalesOpuscula Jacksoniana, Uredinales and Ustilaginales
PPresent evolutionary tendencies and the origin of life cyclePresent evolutionary tendencies and the origin of life cycles in the uredinales
