Liver flukes in cattle. - [Slightly rev. - Washington, U.S. Govt. Print. Off., 1968] - 8 p. illus. 24 cm. - United States. Dept. of Agriculture. Leaflet ; no. 493 . - Leaflet (United States. Department of Agriculture) ; no. 493. . LCCN: agr68000097 Subjects--Topical Terms: Liver flukes.Cattle--Parasites.Fasciola hepatica.Cattle--Parasites. LC Class. No.: S21 / .A483 no. 493 National Agricultural Library Call No.: 1 Ag84L no. 493 1968