-
1[2016]-, United Nations Environment Programme
-
2[2017]-, United Nations Environment Programme
-
3
-
4
-
5[2016?-2016], United Nations Environment Programme
-
6[2016]-, United Nations Environment Programme
-
7[2016]-, United Nations Environment Programme
-
8
-
9[2016]-, United Nations Environment Programme
-
10
-
11
-
12[2016]-, United Nations Environment Programme
-
13
-
14[2007-2010], [Verlag nicht ermittelbar]
-
15
-
16[2011]-2020, Frankfurt School of Finance & Management
-
17[2016]-, United Nations Environment Programme
-
18
-
19
-
20