1. Jack pine geographical variation — five year results from lower Michigan;Arend;Pap. Mich. Acad. Sci., Arts, Lett.,1961
2. United States Forest Service Northeast Area state private forestry progress report — 1972;Averill;Science,1973
3. Insect Outbreaks,1987
4. Host resistance and susceptibility;Cates,1982
5. Patterns in defensive natural products chemistry: Douglas fir and western spruce budworm interactions;Cates,1983