00358nam a22001457a 45000010005000000030010000050050017000150400014000320080041000461000018000872450055001052600027001603000011001876500014001983322MX-SIABUC20260702203036.0 aMX-SIABUC050612s1990 enkx j eng d40aMackie, J. L.0 aEthics inventing right and wrong/cby J. L. Mackie4 aLondon:bPenguin Books4 a249 p. a1.EĢTICA