1
2
3
Published 1999
“...statistical surveys...”
Book
4
5
“...statistical surveys...”
Book
6
Published 1994
“...statistical surveys...”
Book
7
Published 2010
“...statistical surveys...”
Book
8
Published 2000
“...statistical surveys...”
Book
9
10
Published 2001
“...statistical surveys...”
Book
11
12
Published 2002
“...statistical surveys...”
Book
13
Published 2002
“...statistical surveys...”
Book