Gray, Alexander 1882-1968. The development of economic doctrine : an introductory survey / Sir Alexander Gray. - 1st. ed. - London : Longmans, c1931[impression 1967] - vii, 384 p. : ill. ; 20 cm. Includes index. Subjects--Topical Terms: Economics--History. Dewey Class. No.: 330.1 / GRD 1935