Stewart, David W.
Focus groups : theory and practice / David W. Stewart, Prem N. Shamdasani. - Sage Publications 1990.
8955
Focused group interviewing.
Social sciences - Methodology.
Social groups.
H61.28 / Ste.
Focus groups : theory and practice / David W. Stewart, Prem N. Shamdasani. - Sage Publications 1990.
8955
Focused group interviewing.
Social sciences - Methodology.
Social groups.
H61.28 / Ste.