00916nam0-22003251i-450-99000377921040332120130122185644.00-8039-5255-4000377921FED01000377921(Aleph)000377921FED0100037792120030910d1994----km-y0itay50------baengGBy-------001yyResearch designqualitative & quantitative approachesJohn W. CreswellLondonSAGEc1994xix, 228 p.23 cmScienze socialiricercametodologiaScienze socialiRicercaMetodo statistico300.72Creswell,John W.143582ITUNINARICAUNIMARCBK990003779210403321300.72 CRE 15211BFSBFSResearch design509802UNINA