Subject
- African trypanosomiasis -- Africa -- Epidemiology1
- African trypanosomiasis -- Environmental aspects -- Africa -- Mathematical models1
- Barley yellow dwarf viruses -- Oregon -- H.J. Andrews Experimental Forest -- Mathematical modeling1
- Host-parasite relationships -- Environmental aspects -- Mathematical models1
- Trypanosoma brucei -- Environmental aspects -- Africa -- Mathematical models1
- Tsetse-flies -- Environmental aspects -- Africa -- Mathematical models1