Ulmer, Melville J. 1911- Economics : theory and practice / [by] Melville J. Ulmer. - Second edition - xxiv, 757 pages : illustrations, ports. ; 25 cm. Includes bibliographies. LCCN: 65001967 Subjects--Topical Terms: Economics. LC Class. No.: HB171.5 / .U49 1965 Dewey Class. No.: 330.1