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Energia, materiile prime şi dezvoltarea economica : documentar
Bari, Ioan - 1984
Persistent link: https://www.econbiz.de/10000811019
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Progresul tehnic şi reducerea cheltuielilor materiale
Horovitz, Marcu (contributor) - 1987
Persistent link: https://www.econbiz.de/10000816856
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Valorificarea superioară a resurselor naturale
Puiu, Alexandru - 1969
Persistent link: https://www.econbiz.de/10000331808
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Resursele mondiale şi limitele lor
Florescu, Mihail - 1975
Persistent link: https://www.econbiz.de/10002204545
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Resursele energetice şi de materii prime
Ceauşescu, Nicolae - 1980
Persistent link: https://www.econbiz.de/10001991908