A leaf-spotting disease of Hybrid and native aspen
Boyer. M.G.
A leaf-spotting disease of Hybrid and native aspen - - CAN 1962 - - Canadian Journal of Botany v.40 .
--Aspen--Fitopatologia--
Botanica
A leaf-spotting disease of Hybrid and native aspen - - CAN 1962 - - Canadian Journal of Botany v.40 .
--Aspen--Fitopatologia--
Botanica