00435nam a22001697a 45000010005000000030010000050050017000150400014000320080041000460200018000871000021001052450071001262500006001972600034002033000011002376500017002486350MX-SIABUC20260702203552.0 aMX-SIABUC050611s1989 US X j eng d a0-393-95714-440aMansfield, Edwin0 aStudy guide for principles of microeconomics/cPor Edwin Mansfield4 a64 aNew York :bW.W. Norton & Co.4 a290 p. a1.ECONOMÍA