RT Book T1 A practical guide to the conduct of filed research in the social sciences A1 Feldman, Elliot J. LA English PP Boulder, Color. PB Westview Pr. YR 1981 UL https://krimdok.uni-tuebingen.de/Record/1612865410 CN 300/.723 SN 0-89158-981-3 SN 0-89158-980-5