McEachern, William A. Economics : a contemporary introduction / William A. McEachern. - 9th ed., - Mason : South-Western, Cengage Learning c2012. - vi, 628 p . : ill. ; 28 cm. "Interactive text." ISBN: 9781111222390 9781111222390 LCCN: 2002007707 Subjects--Topical Terms: Economics. LC Class. No.: HB171.5 / .M475 2003 Dewey Class. No.: 330