81
82
1987
Herausgeber:
“...Scholz, Piotr O....”
83
1990
Herausgeber:
“...Scholz, Piotr O....”
84
85
86
87
88
89
90
91
92
93
94
95
Studied by the Canadian Expedition to the Dongola Reach (Sudan)
Herausgeber:
“...Scholz, Piotr O....”