00850nam a2200241 i 450099100145687970753620020502193635.0950111s1990 uk ||| | eng 0803937792b11515508-39ule_instPRUMB61471ExLDip. di SSSC - SociologiaitaQualitative evaluation and research methods /Michael Quinn Patton2. edLondon :Sage,c1990530 p. ;23 cm.Scienze socialiMetodologia.b1151550821-09-0601-07-02991001456879707536LE021 C1D231LE021N-8730le021-E0.00-l- 00000.i1171060301-07-02Qualitative Evaluation and Research Methods458115UNISALENTOle02101-01-95ma -enguk 01