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502. Trees. Propagation of trees and shrubs; [by Guy E. Yerkes].

Corporate/Agency Authors:
Plant Industry, Soils, and Agricultural Engineering Bureau and Agricultural Research Administration
Publisher:
Plant Industry, Soils, and Agricultural Engineering Bureau
Date:
[Apr. 1929, slightly revised Aug. 1945.] [1945.]
SuDoc number:
A 1.9:1567/3

503. Elm. Dieback of elm; by Curtis May.

Corporate/Agency Authors:
Plant Industry, Soils, and Agricultural Engineering Bureau, Agricultural Research Administration, and Agriculture Department
Publisher:
Plant Industry, Soils, and Agricultural Engineering Bureau
Date:
July 2, 1945
SuDoc number:
A 77.502:El 6

504. Fertilisers. Selecting fertilizers; by Albert R. Merz.

Corporate/Agency Authors:
Plant Industry, Soils, and Agricultural Engineering Bureau, Agricultural Research Administration, and Agriculture Department
Publisher:
Plant Industry, Soils, and Agricultural Engineering Bureau
Date:
Aug. 1945 [1938], slightly revised July 1945. [1945.]
SuDoc number:
A 1.4/2:487/3

505. Potato diseases and their control; [by T. P. Dykstra].

Corporate/Agency Authors:
Plant Industry, Soils, and Agricultural Engineering Bureau and Agricultural Research Administration
Publisher:
Plant Industry, Soils, and Agricultural Engineering Bureau
Date:
[Oct. 1941, slightly revised July 1945.] [1945.]
SuDoc number:
A 1.9:1881/2

510. Weeds. Killing weeds with 2, 4-D.

Corporate/Agency Authors:
Plant Industry, Soils, and Agricultural Engineering Bureau, Agricultural Research Administration, and Agriculture Department
Publisher:
Plant Industry, Soils, and Agricultural Engineering Bureau
Date:
July 1945
SuDoc number:
A 77.502:W 41

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