Subject
- Nematoda9
- Nematoda -- Oregon2
- Agrobacterium tumefaciens1
- Calves1
- Cattle -- Parasites -- Oregon1
- Colorado potato beetle -- Biological control1
- Insect nematodes1
- Insects -- Oregon -- H.J. Andrews Experimental Forest1
- Mites -- Oregon -- H.J. Andrews Experimental Forest1
- Nematoda -- Control1
- Nematoda -- Oregon -- H.J. Andrews Experimental Forest1
- Nematoda as biological pest control agents1
- Oogenesis1
- Soil fumigation -- Equipment and supplies1
- Soil nematodes1
- U.S. International Biological Program. Coniferous Forest Biome1
- Water -- Purification1