Subject
- Ectomycorrhizas -- Oregon3
- Mycorrhizas3
- Douglas fir2
- Douglas fir -- Oregon -- Growth2
- Forest soils -- Oregon2
- Nitrogen -- Fixation2
- Acacia senegal -- Sudan -- Genetics1
- Acacia senegal -- Sudan -- Growth1
- Acacia senegal -- Sudan -- Hardiness1
- Actinomycetales1
- Agroforestry -- Zambia1
- Argon-argon dating1
- Bioclimatology -- Brazil1
- Carbon offsetting1
- Carbon sequestration1
- Ceanothus velutinus -- Oregon -- H.J. Andrews Experimental Forest1
- Coastal biodiversity conservation1
- Conifers -- Coast Ranges -- Seedlings1
- Conifers -- Oregon -- Seedlings1
- Douglas fir -- Genetics1