01086nam--2200361---450-99000183705020331620060721092813.00-7619-2442-6000183705USA01000183705(ALEPH)000183705USA0100018370520040709h2003----km-y0itay50------baengUSy|||z|||001yyResearch designqualitative, quantitative, and mixed methods approachesJohn W. Creswell2. edThousand Oaks [etc.]Sagecopyr. 2003XXV, 245 p.24 cmScienze socialiRicercheMetodoScienze socialiMetodi statistici300.72CRESWELL,John W.143582ITsalbcISBD990001837050203316II.5. 5591(XV A 443)189851 L.M.II.5.00127238BKUMAACQUISTI1020040709USA011026ANNAMARIA9020060721USA010928Research design509802UNISA