PUERTO RICO AGRICULTURAL EXPERIMENT STATION 
MAYAGUEZ, PUERTO RICO 
Under the supervision of the 
UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 38 
PARASITES AND PARASITIC DISEASES 
OF SWINE IN PUERTO RICO 
By 
H. L. VAN YOLKENBERG 
Parasitologist 
▼ 
Issued March 1936 
UNITED STATES DEPARTMENT OF AGRICULTURE 
OFFICE OF EXPERIMENT STATIONS 
For sale by the Superintendent of Documents, Washington, D. C. 
Price 5 cents 
