Daily Quiz for March 31, 2013 - History Net: Where History Comes Alive - World & US History OnlineHistory Net: Where History Comes Alive – World & US History Online | From the World's Largest History Magazine Publisher

Daily Quiz for March 31, 2013

3/31/2013 • Quiz

This doctor established the first sterile operating environment in history.

  • William H. Welch
  • William Stewart Halsted
  • Robert Koch
  • Walter Reed