Willis, R. A. 1898-1980. The principles of pathology. - London : St. Louis : Butterworth ; C. V. Mosby, 1950. - xi, 667, 55 p. illus., col. plates. 25 cm. Includes bibliographies. ISBN: Subjects--Topical Terms: Pathology. LC Class. No.: RB 114 / .W55 1950