PUERTO RICO AGRICULTURAL EXPERIMENT STATION 
MAYAGUEZ, PUERTO RICO 
Under the supervision of the 
UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 36 
PARASITES AND PARASITIC DISEASES 
OF CATTLE IN PUERTO RICO 
By 
H. L. VAN VOLKENBERG 
Parasitologist 
Issued October 1934 
fa.: 
t»J* 
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UNITED STATES DEPARTMENT OF AGRICULTURE 
OFFICE OF EXPERIMENT STATIONS 
For sale by the Superintendent of Documents, Washington, D.C. ....... Price 5 cents 
FREE PUBLIC LIBRARY 
JACKSONVILLE, FLORIDA 
