00957nam0-22003371i-450-9900030244404033210-8039-3470-X000302444FED01000302444(Aleph)000302444FED0100030244420000920d1989----km-y0itay50------baitaITCase Study ResearchDesign and MethodsRobert K. YinForeword by Donald T. Campbell.Rev. ed.Newbury ParkLondonSage1989.164 p.22 cmApplied Social Research Methods Series5Scienze socialiRicercaMetodologia11130Campbell,Donald ThomasYin,Robert K.ITUNINARICAUNIMARCBK99000302444040332111130 YIN12763SESSESCase Study Research467010UNINAING01