Uninfectes elm wood as a source of the bark beetle (Scolytus multistriatus Marsham), Carrying the Dutch Elm Disease Pathogen - Collins, Donald L.; Dietrich, Henry; Parker, K.G. (Ithaca, N.Y. : Cornell University Agricultural Experiment Station, 1940)
Encuadernado con: Orchard insects of the pacific northwest and their control / by E.J., Newcomer
Keywords: Olmo -- plagas