Survival of Douglas-fir seedlings sprayed with atrazine, terbacil, and 2,4-D /Author: Gratkowski, H.
Publisher: [Portland, Or.] : Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station,
Date: 1979. This title can be found in 1 Iowa libraries.
Herbicides for shrub and weed tree control in western Oregon /Author: Gratkowski, H.
Publisher: Portland, Or. : Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station,
Date: 1978. This title can be found in 1 Iowa libraries.
Aerial application equipment for herbicidal drift reduction /Author: Stewart, R. E.
Publisher: Portland, Or. : Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station,
Date: 1976. This title can be found in 1 Iowa libraries.
Herbicides for grass and forb control in Douglas-fir plantations /Author: Gratkowski, H.
Publisher: Portland, Or. : Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station,
Date: 1976. This title can be found in 1 Iowa libraries.
Silvicultural use of herbicides in Pacific Northwest forests /Author: Gratkowski, H.
Publisher: Portland, Oreg : U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station,
Date: 1975. This title can be found in 1 Iowa libraries.
Herbicidal drift control : aerial spray equipment, formulations, and supervision /Author: Gratkowski, H.
Publisher: Portland Or. : Pacific Northwest Research Station, U.S. Dept. of Agriculture, Forest Service,
Date: 1974. This title can be found in 1 Iowa libraries.
Aerial spray adjuvants for herbicidal drift control /Author: Gratkowski, H.
Publisher: Portland Or. : Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture,
Date: 1973. This title can be found in 1 Iowa libraries.
The future role of chemicals in forestry /Author: Tarrant, Robert F.,
Publisher: Portland Or. : Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture,
Date: 1973. This title can be found in 1 Iowa libraries.
Midsummer foliage sprays on salmonberry and thimbleberry /Author: Gratkowski, H.
Publisher: Portland, Or. : Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture,
Date: [1971] This title can be found in 1 Iowa libraries.
Reclamation of nonsprouting greenleaf manzanita brushfields in the Cascade Range /Author: Gratkowski, H.
Publisher: Portland, Or. : Pacific Northwest Forest and Range Experiment Station, U.S. Dept. of Agriculture, Forest Service,
Date: 1968. This title can be found in 1 Iowa libraries.
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