John Ettling

Born 1944-01-01

Identifiers

• Open LibraryOL1706885A

Top Subjects

• 20th century (1)
• Southern States (1)
• Rockefeller Sanitary Commission for the Eradication of Hookworm Disease -- History (1)
• Public health -- Southern States -- History -- 20th century (1)
• Hookworm disease -- Southern States -- Prevention -- History -- 20th century (1)
• History: American (1)
• United States History (General) (1)