Subject
- African buffalo -- Parasites -- Ecology -- South Africa -- Kruger National Park1
- African buffalo -- Parasites -- South Africa -- Kruger National Park1
- Animal communities -- Washington (State) -- San Juan Island1
- Ascomycetes -- Oregon -- Classification1
- Atheliaceae -- Oregon -- H.J. Andrews Experimental Forest1
- Atmospheric carbon dioxide -- Oregon -- Metolius River Watershed1
- Beetles -- Host plants -- Oregon1
- Benthos -- Oregon -- Coos Bay (Bay)1
- Biological ecology -- Oregon1
- Biological invasions -- California1
- Bird populations -- Alaska -- Prince William Sound1
- Blood -- Parasites -- South Africa -- Kruger National Park1
- Bryophytes -- Cascade Range1
- Bryophytes -- Ecology -- Oregon1
- Bryophytes -- Oregon1
- California black oak -- Oregon -- Rogue River Watershed (Klamath County-Curry County)1
- Camp sites, facilities, etc. -- Environmental aspects -- California -- Yosemite National Park1
- Carbon cycle (Biogeochemistry) -- Central America1
- Carbon cycle (Biogeochemistry) -- Oregon -- Metolius River Watershed1
- Cavity-nesting birds -- Effect of fires on -- Oregon, Eastern1