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- Author(s):
- Welch, William Henry, 1850-1934
- Publication:
- Baltimore, 1889
- Subject(s):
- Classical Swine Fever -- etiology
- Author(s):
- Welch, William Henry, 1850-1934
- Publication:
- Philadelphia, 1894
- Subject(s):
- Classical Swine Fever
- Author(s):
- Welch, William Henry, 1850-1934
- Publication:
- Washington, D. C., 1893
- Subject(s):
- Cholera -- prevention & control
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