TY  - BOOK
AU  - Hubbes, Martin.
TI  - Host-parasite in the Hypoxylon canker of aspen
KW  - Hypoxylon
KW  - Populus tremuloides
N1  - Sobretiro de : Breeding Pest-Resistant Trees Proc. NATO and NSF Symp. Pennsylvania State Univ. 1964. Oxford, Pergamon Press, 1966 pp. 229-238
ER  -