Hits 1-9 within 9 documents
Thematik oder Incentives? Zur Erhöhung der Rücklaufquoten bei postalischen Befragungen [journal article]
Source: ZUMA Nachrichten, 23 (1999) 45. p.72-87
Hits 1-9 within 9 documents
Author(s): Porst, Rolf.- 1991. 25,9p.
Author(s): Porst, Rolf.- 2001. 12p.
Author(s): Porst, Rolf
Source: ZUMA Nachrichten, 23 (1999) 45. p.72-87
Author(s): Klein, Sabine; Porst, Rolf.- 2000. 36p.
Author(s): Porst, Rolf.- 1993. 32p.
Author(s): Prüfer, Peter; Porst, Rolf.- 2008. 37p.
Author(s): Prüfer, Peter; Porst, Rolf.- 2007. 37p.
Author(s): Porst, Rolf; Prüfer, Peter; Pfeffer, Claudia.- 2008. 96p.
Author(s): Prüfer, Peter; Porst, Rolf.- 2007. 17p.