1. Factors affecting radial growth loss in Douglas-fir caused by western spruce budworm defoliation;Alfaro,1985
2. Mortality and top-kill in Douglas-fir following defoliation by the western spruce budworm in British Columbia;Alfaro;J. Entomol. Soc. B.C.,1986
3. Stem defects in Sitka spruce induced by Sitka spruce weevil, Pissodes strobi;Alfaro,1989
4. Tree mortality and radial growth losses caused by the western spruce budworm in a Douglas-fir stand in British Columbia;Alfaro;Can. J. For. Res.,1982
5. A microcomputer based data reader and editor for the DIGIMIC tree ring measuring systems;Alfaro;Environ. Can., Can. For. Serv. Res. Notes,1984