Morgan, David L. Planning focus groups / David L. Morgan - Thousand Oaks, California : SAGE, c1998 - xviii, 139 p. : il. - Focus group kit ; 2 . ISBN: 076190817X (rústica) Source: USD 48.18 Subjects--Topical Terms: Entrevista de grupo focalizado LC Class. No.: H61.28 / M67 1998