Economic principles and modern practice / by Henry R. Mussey and Elizabeth Donnan, Mussey, Henry Raymond, 1875-1940. Donnan, Elizabeth, 1883-1955, jt aut. Economics. 330 MUE Includes bibliographical references and index. Microfilm. New York, N.Y., Columbia University Libraries, 1994. 1 microfilm reel, 35 mm. Filmed; NEH Project (FMEST); 1994. Master negative: 94-82049-2. No. 2 on a reel of 12 titles. New York : Ginn , 1947. 1994. 1947. 1947 Text x, 834 p. 1 microfilm reel, 35 mm. eng