CIRCULAR No. 148 ..,4-- 
mI m5 
: Issued November, 1930 
Washington, D. C. Revised January, 1933 
Parasites 
and Parasitic Diseases 
of Horses 
By 
BENJAMIN SCHWARTZ 
Senior Zoologist 
MARION IMES 
Senior Veterinarian 
and 
WILLARD H. WRIGHT 
Associate Veterinarian 
Zoological Division, Bureau of Animal Industry 
