RT Book T1 Designing qualitative research A1 Marshall, Catherine 1946- A2 Rossman, Gretchen B. 1944- LA English PP Newbury Park u.a. PB Sage YR 1990 ED 4. print. UL https://krimdok.uni-tuebingen.de/Record/1650743696 CN 300'.72 SN 0803931581 SN 0803931573 K1 Sozialwissenschaften : Qualitative Methode