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3991. Nematoid worms. On some plant parasitic nemas and related forms [with list of literature cited]; by G. Steiner.

Corporate/Agency Authors:: Plant Industry Bureau and Agriculture Department
Publisher:: Plant Industry Bureau
Date:: 1925
SuDoc number:: A 1.23/a:N 34/5

3992. Oats. Fall sown oats; [by C. W. Warburton and T. R. Stanton].

Corporate/Agency Authors:: Plant Industry Bureau and Agriculture Department
Publisher:: Plant Industry Bureau
Date:: [July, 1920, reprint 1925.]
SuDoc number:: A 1.9:1119/1-4

3993. Oats. Spring oat production; [by C. W. Warburton].

Corporate/Agency Authors:: Plant Industry Bureau and Agriculture Department
Publisher:: Plant Industry Bureau
Date:: [Nov. 1917, revised June, 1923, reprint 1925.]
SuDoc number:: A 1.9:892/2-2

3994. Oats. Study of variability in Burt oat [with list of literature cited]; by Franklin A. Coffman, John H. Parker, and Karl S. Quisenberry.

Corporate/Agency Authors:: Plant Industry Bureau and Agriculture Department
Publisher:: Plant Industry Bureau
Date:: 1925
SuDoc number:: A 1.23/a:Oa 8/5

3995. Oats. Variation in Kherson oat at Akron, Colo. [with list of literature cited]; by F. A. Coffman and T. R. Stanton.

Corporate/Agency Authors:: Plant Industry Bureau and Agriculture Department
Publisher:: Plant Industry Bureau
Date:: 1925
SuDoc number:: A 1.23/a:Oa 8/7

3996. Onions. Control of mycelial neck rot of onion by artificial curing; by J. C. Walker.

Corporate/Agency Authors:: Plant Industry Bureau and Agriculture Department
Publisher:: Plant Industry Bureau
Date:: 1925
SuDoc number:: A 1.23/a:On 4/8

3997. Onions. Further studies on relation of onion scale pigmentation to disease resistance [with list of literature cited]; by J. C. Walker and Carl C. Lindegren.

Corporate/Agency Authors:: Plant Industry Bureau and Agriculture Department
Publisher:: Plant Industry Bureau
Date:: [1925.]
SuDoc number:: A 1.23/a:On 4/5

3998. Onions. Further studies on toxicity of juice extracted from succulent onion scales [with list of literature cited]; by J. C. Walker, Carl C. Lindegren, and Freda M. Bachmann.

Corporate/Agency Authors:: Plant Industry Bureau and Agriculture Department
Publisher:: Plant Industry Bureau
Date:: 1925
SuDoc number:: A 1.23/a:On 4/6

3999. Onions. Home production of onion seed and sets; [by W. R. Beattie].

Corporate/Agency Authors:: Plant Industry Bureau and Agriculture Department
Publisher:: Plant Industry Bureau
Date:: [1911, revised Jan. 1925.] [1925.]
SuDoc number:: A 1.9:434/4

4000. Ophiobolus graminis. Influence of soil temperature and moisture on infection of young wheat plants by Ophiobolus graminis [with list of literature cited]; by H. H. McKinney and R. J. Davis.

Corporate/Agency Authors:: Plant Industry Bureau and Agriculture Department
Publisher:: Plant Industry Bureau
Date:: 1925
SuDoc number:: A 1.23/a:W 56/55

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