Buchanan, Scott. The doctrine of signatures : a defence of theory in medicine / Scott Buchanan. - London : Kegan paul, trence,trubner & Co. Ltd., 1938. - xiv, 205 p. ; 22 cm. - International library of philosophy. . Includes index. 324 324 Subjects--Topical Terms: Signatures (Medicine). Dewey Class. No.: 610.1 / B954d