Книги автора Jaak Billiet
Jaak Billiet
учебная и научная литература, учебники и пособия для вузов, знания и навыкиHigh response rates have traditionally been considered as one of the main indicators of survey quality. Obtaining high response rates is som…
High response rates have traditionally been considered as one of the main indicators of survey quality. Obtaining high response rates is som…
