Washington, D.C. August 16, 1938An employee of the Bureau of Entemology at the U.S. Department of Agriculture infects a mouse with the larvae of spotted fever ticks for research on eradicating the disease. Editorial Stock Photo - Afloimages
Washington, D.C.: August 16, 1938
An employee of the Bureau of Entemology at the U.S. Department of Agriculture infects a mouse with the larvae of spotted fever ticks for research on eradicating the disease.