81
82
83
84
85
86
Ressourcenpolitik : Konfliktpotentiale und Kooperationschancen bei der westlichen Rohstoffsicherung.
Müller, Helmut
1984
“...GWA - Raw material economy, raw material policy...”1984
87
“...GWA - Raw material economy, raw material policy...”
88
“...GWA - Raw material economy, raw material policy...”
89
“...GWA - Raw material economy, raw material policy...”
90
91
92
The Future of nonfuel minerals in the U.S. and world economy : input-output projections, 1980-2030 /
Leontief, Wassily W.
1983
“...GWA - Raw material economy, raw material policy...”1983
93
94
95
96
97
98
99
100