Hits 1-2 within 2 documents
Hits 1-2 within 2 documents
Author(s): Kroll, Lars E.; Lampert, Thomas; Lange, Cornelia; Ziese, Tomas.- 2008. 70p.
Author(s): von der Lippe, Elena; Schmich, Patrick; Lange, Cornelia
Source: Survey Research Methods, 5 (2011) 3. p.103-116