00972nam2-22003371i-450-99000319546040332120061204124823.00-335-07436-7vol. 2A0-335-07437-5vol. 2B000319546FED01000319546(Aleph)000319546FED0100031954620030910d1979----km-y0itay50------baengGBBeginning researchMilton KeynesOpen University Pressc19792 v. (160, 84 p.)30 cmResearch methods in education and the social sciences0010008230412001Social sciences2A/2BSociologiaMetodologiaOpen UniversityITUNINARICAUNIMARCBK99000319546040332111130 BLO/21131SES11130 BLO/31132SESSESBeginning research453257UNINA