00841nam0-22003131i-450-9900030783504033210-04-312014-8000307835FED01000307835(Aleph)000307835FED0100030783520000920d1989----km-y0itay50------baitaITField Researcha Sourcebook and Field Manualedited by Robert G.Burgess.4th ed.LondonUnwin Hyman1989.XII, 286 p.25 cmContemporary Social Research Series411220Burgess,Robert G.ITUNINARICAUNIMARCBK99000307835040332111220 BUR8475SESSESField Research460354UNINAING01