RT Book T1 Readings in the analysis of survey data T2 [Studies and reports series / American Marketing Association] A2 Ferber, Robert LA English PP Chicago, Ill. PB American Marketing Association YR 1980 UL https://krimdok.uni-tuebingen.de/Record/1098685032 CN 658.8/3/028 K1 Marktforschung : Statistik