duction qualities, introduce a uni terminology, and control pullorum sease

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Filmography in the catalog

Credited on 1 film (1939) — matched by name in the Creator or Credits field.

Year ▲	Title	Creator	Length	Format	Color	Sound
1939	272 U. S.	duction qualities, introduce a uni terminology, and control pullorum sease; how flocks may meet req ments of three pullorum-control classes and five progressive breeding stages. (48 frames) The Nature of Plant Diseases U.S. Department of Agriculture	48 frames	Filmstrip