Systema helminthum : vol. 1, the digenetic trematodes of vertebrates - part 1 / by Satyu Yamaguti. Yamaguti, Satyu, 1894- Helminths Classification. Helminthology. Vertebrates Parasites. QL386 .Y3 595.1 YAS Revised ed. of v. 1, pt. 1 and 2 published in 1971 under title: Synopsis of digenetic trematodes of vertebrates. Includes bibliographical references and index. New York : Interscience Publishers, c1958. c1958. 1958 Text vii, 979 p. : ng