Page 15 |
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![](/images/content-divider.gif)
Dr. William Mengeling and Dr. Eugene Pirtle
play key roles in the eradication of
Hog Cholera in the late 1960's.
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Page 15 |
![]() |
Dr. William Mengeling and Dr. Eugene Pirtle
play key roles in the eradication of
Hog Cholera in the late 1960's.
<< Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 [15] 16 17 18 Next >> |