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Bibliotheken

1.

Bias
by Delgado-Rodríguez, M

Journal of epidemiology and community health (1979), 2004-08, Vol.58 (8), p.635-641

17.

TOTAL SURVEY ERROR: PAST, PRESENT, AND FUTURE
by Groves, R. M

Public opinion quarterly, 2010-01-01, Vol.74 (5), p.849-879

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