Carballo, Marita. Public Opinion Polling in a Globalized World [electronic resource] / edited by Marita Carballo, Ulf Hjelmar. - 1a ed. - Berlin, Heidelberg : Springer-Verlag Berlin Heidelberg, 2008. - v.: digital ISBN: 9783540757535 Subjects--Topical Terms: Encuestas de la opinión pública LC Class. No.: HM1236 / C37 2008