Welch, Patrick J. Economics, theory & practice / Patrick J. Welch, Gerry F. Welch. - 9th ed. / Patrick J. Welch, Gerry F. Welch. - Hoboken, N.J. : John Wiley, c2010. - xx, 536 p. : col. ill. ; 26 cm. Previous ed.: 2006. Includes bibliographical references and index. ISBN: 9780470450093 (pbk.) 9780470450093 LCCN: 2011420558 Nat. Bib. No.: GBA986515 bnb Nat. Bib. Agency Control No.: 015361464 Uk Subjects--Topical Terms: Economics. LC Class. No.: HB171.5 / .W3935 2010 Dewey Class. No.: 330