Ekelund, Robert B. A history of Economic theory and method / Robert B. Ekelund and Robert F. Hebert - 3rd ed. - New York : McGraw-Hill, c1990. - xvi, 688 p. ; 23 cm. ISBN: 0070194165 LCCN: Subjects--Topical Terms: EconomicsHistory LC Class. No.: HB75 / .E47 1990 Dewey Class. No.: 330.09 / E36h