00445nam a22001457a 4500008004100000020001800041050002300059100002200082245007700104250001200181260004300193300002300236500002000259700002000279170310b        xxu||||| |||| 00| 0 eng d  a9780471679462  aHB 171.5 .W45 2007  aWelch, J. Patrick  aEconomics :btheory and practice /cPatrick J. Welch and Gerry F. Welch.  a8th ed.  aHoboken :bJohn Wiley and Sons,c2007.  axx, 532p. :bill.   aIncludes index.  aWelch, Gerry F.