1
2
by Hunt
Published 1989
3
by Toye
Published 1993
4
Published 2001
5
Published 2001
6
Published 2001
7
Published 2001
8
by Dube
Published 1984
9
by Max-Neef
Published 1991
10
11
12
13
14
15
Published 2010
16
by Seitz, 1931-
Published 2012
17
by Kressel
Published 2012
18
by Turner
Published 2012
19
by Sardar
Published 2017