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1“…American Association for Public Opinion Research (Nueva York, Estados Unidos)…”
Click para texto completo. Acceso restringido UPSA
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2
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3Publicado 1937“…American Association for Public Opinion Research (Nueva York, Estados Unidos)…”
Acceso: 1996- (EBSCO)
Acceso: 1996- (Oxford)
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4Publicado 1974“…American Association for Public Opinion Research, sponsoring body…”
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5por World Association for Public Opinion Research.“…American Association for Public Opinion Research…”
Publicado 2000
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6Publicado 2013“…American Association for Public Opinion Research, sponsoring body…”
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7Publicado 1937“…American Association for Public Opinion Research…”
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8Publicado 1937“…American Association for Public Opinion Research, issuing body…”
Revista digital