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A Comparison of Results from a Spanish and English Mail Survey: Effects of Instruction Placement on Item Missingness [journal article]
Source: Survey Methods: Insights from the Field, (2013). p.13
Effects of a sequential mixed-mode design on participation, contact and sample composition: Results of the pilot study "IMOA - Improving Health Monitoring in Old Age" [journal article]
Source: Survey Methods: Insights from the Field, (2019). p.1-13