00394nam a22001577a 450000100060000000300100000600500170001604000140003300800410004710000220008824500380011025000120014826000450016030000110020565000200021630215MX-SIABUC20260702210340.0  aMX-SIABUC050525s1972    -us#   j            eng d  aHelfert, Erich A.  aTechniques of financial analysis.  a3a. ed.  aHomewood, Ill. :bRichard D. Irwin, Inc.  a270 p.  a1. CONTABILIDAD