TY  - BOOK
AU  - BoyerM.G.
TI  - A leaf-spotting disease of Hybrid and native aspen
T2  - Canadian Journal of Botany
PY  - 1962///
CY  - -CAN
PB  - 
KW  - Aspen
KW  - Fitopatologia
KW  - Botanica
ER  -