@article {782, title = {Hymenopterous parasites of Ips paraconfusus (Coleoptera: Scolytidae) larvae and their contribution to mortality. I. Influence of host tree and tree diameter on parasitization.}, journal = {Canadian Entomologist}, volume = {105}, year = {1973}, pages = {1453-1464}, author = {Ball, J.C. and Dahlsten, D.L.} }