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Subject
- Animal populations1
- Animals--Food1
- Animals--Habitations1
- Biology--Fieldwork1
- Elk1
- Elk--Habitat1
- Endangered species1
- Erosion1
- Grazing--Environmental aspects1
- Mammals--Ecology1
- McTaggart-Cowan, Ian, 1910-20101
- Molting1
- Parental behavior in animals1
- Physiology1
- Plant ecology1
- Rivers1
- Wildlife conservation1
- Wolves1
- Wolves--Ecology1