Focus groups : theory and practice /
Stewart, David W.
Focus groups : theory and practice / by David W Stewart and Prem N Shamdasani. - United States : Sage publications, 1990. - 150p.
0803933894
Research.
300.723 / STE.F.20
Focus groups : theory and practice / by David W Stewart and Prem N Shamdasani. - United States : Sage publications, 1990. - 150p.
0803933894
Research.
300.723 / STE.F.20