00923nam0-22003251i-450 99000376853040332120220718093715.00-333-29199-9000376853FED01000376853(Aleph)000376853FED0100037685320001010d1982----km-y0itay50------baitay-------001yySocial research ethicsan examination of the merits of covert participant observationedited by Martin Bulmer1. ed.LondonMacMillan1982xiv, 284 p.21 cmScienze socialiRicercaAspetti etici174.93Bulmer,MartinITUNINARICAUNIMARCBK990003768530403321174.93 BUL 12189BFSBFSSOCIAL research ethics510626UNINAING01