00453nam a22001697a 4500003000400000005001700004008004100021020001500062040000800077082002500085100002400110245005800134250001000192260004000202300001100242650003000253OSt20150209154459.0030206s2002    ck            000 0 spa d  a9701001397  cOSt04221a808.066378bZ6771 aZorrilla, Santiago 00aGuía para la elaborar la tesis /cSantiago Zorrilla  a2 ed.  aMéxico : b McGraw Hill,, c1992.  a111 p.042LEMBxMÉTODOS - TESIS