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Are 'Webographic' or attitudinal questions useful for adjusting estimates from Web surveys using propensity scoring? [journal article]
Source: Survey Research Methods, 1 (2007) 3. p.155-163
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Author(s): Schonlau, Matthias; Soest, Arthur van; Kapteyn, Arie
Source: Survey Research Methods, 1 (2007) 3. p.155-163