00750nam a2200229Ia 450000100070000000500170000700800410002402000160006504000200008110000350010124501010013625000110023726000370024830000550028533600080034033700160034833800190036450400320038370000330041565000340044865000380048221769420240516151553.0981016s1998    mx a     b    001 0 spa d  a970-1018990  aPUCPRbspaerda  aHernández Sampieri, Roberto.10aMetodología de la investigación /cRoberto Hernández Sampieri, Carlos Fernández Collado.  a2a ed.  aMéxico :bMcGraw-Hill ,c1998.  axxviii, 501 p.bil.c23 cm.e1 CD-ROM (4 3/4 in.).  btxt  2rdamediabn  2rdacarrierbnc  aBibliography: p. [475]-481.1 aFernández Collado, Carlos. 0aResearchxMethodology.2Local 0aSocial sciencesxResearch.2Local