00517cam a22001812  4500001001100000005001700011008004100028020001700069040001500086100003400101245007400135250001300209260003400222300001700256650002700273700003200300852000300332000002105520151021152605.0120110s         xx           000 0 eng d  a8126512621 :  aKABUcKABU1 aWelch, Patrick J.@000018172010aEconomics :btheory and practice /cPatrick J. Welch, Gerry F. Welch.  a7th  ed.  aNew Delhi :bJ. Wiley,c2004.  axiv, 544  p. 0aEconomics.@00001482791 aWelch, Gerry F.@00001817211