Is the incidence of tuberculosis in dairy cattle increasing or decreasing in the United States? (Circa 1935)
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8 years ago
Is the incidence of tuberculosis in dairy cattle increasing or decreasing in the United States? (Circa 1935)
Hmmmm, back in 1935, hmmmm well, I'm going to guess yes.
8 years ago via Forums | Front Porch Forum
No, decreasing.
8 years ago via Forums | Front Porch Forum