Subject
- Herbicides46
- Chemical reactions34
- Heat -- Transmission31
- Forests and forestry -- Research -- Oregon25
- Douglas fir24
- Ion exchange21
- Spectrum analysis21
- Organic compounds -- Synthesis20
- Pyrimidines20
- DNA19
- Engineering19
- Biosynthesis18
- Engineering -- Research -- Oregon18
- Enzymes16
- Fishing -- Oregon16
- Gas chromatography16
- Hunting -- Oregon16
- Metabolism16
- Oceanography -- Research16
- Radiation -- Physiological effect16