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结果 1-10 的 63
Increase the use of Arkansas raw materials through research and industrialization
1945
New spiders in the group Dionycha with notes on other species
1945
Kaston, B. J. (Benjamin Julian),
Sixteenth census of the United States: 1940: population: differential fertility: 1940 and 1910: women by number of children ever born | 16th census of the United States: 1940: population: differential fertility: 1940 and 1910: women by number of children ever born | Population: differential fertility: 1940 and 1910: women by number of children ever born | Differential fertility: 1940 and 1910: women by number of children ever born
1945
Grabill, Wilson H.
Sixteenth census of the United States: 1940: population: differential fertility: 1940 and 1910: women by number of children under 5 years old | 16th census of the United States: 1940: population: differential fertility: 1940 and 1910: women by number of children under 5 years old | Population: differential fertility: 1940 and 1910: women by number of children under 5 years old | Women by number of children under 5 years old
1945
Machine Shed
1945
Agriculture and Agri-Food Canada | University of Lethbridge Library
The machine shed in the winter.
显示更多 [+] 显示较少 [-]Dairy Barns
1945
Agriculture and Agri-Food Canada | University of Lethbridge Library
The exterior of the dairy barn.
显示更多 [+] 显示较少 [-]Wool Sacker
1945
Agriculture and Agri-Food Canada | University of Lethbridge Library
A wool sacker, 7.5 horsepower gas motor.
显示更多 [+] 显示较少 [-]Wheat: Sawfly Resistant
1945
Agriculture and Agri-Food Canada | University of Lethbridge Library
The difference between susceptible and sawfly resistant wheat
显示更多 [+] 显示较少 [-]Buildings: Summer Sheep Camp
1945
Agriculture and Agri-Food Canada | University of Lethbridge Library
A small wooden building at the sheep summer camp.
显示更多 [+] 显示较少 [-]P.F.R.A. Building
1945
Agriculture and Agri-Food Canada | University of Lethbridge Library
The Prairie Farm Rehabilitation Administration (PFRA) building. The machine shed is to the right and the poultryman's house is in the background.
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