Fries, Adolf Schaich Tyzzer's disease and the importance of inapparent infection in biomedical research by Adolf Schaich Fries - Copenhagen Denmark The Royal Veterinary and Agricultural University 1981 - 139 p. ill. 24 cm. Includes bibliographical references. ISBN: 8798116703 Subjects--Topical Terms: Biomedical engineering Dewey Class. No.: 614.5 FRI 1981