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Matières premières
1980
Persistent link: https://www.econbiz.de/10003198699
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Matières promières : le poids de l'Afrique
Senghor, Léopold Sedar (contributor) - In: Europe outremer : revue internationale 51 (1974), pp. 1-56
Persistent link: https://www.econbiz.de/10003198708
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Phosphates : a case study of a valuable, depleting mineral in America
1979
Persistent link: https://www.econbiz.de/10003201409
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Maghreb : les phosphates d'Afrique du Nord
19XX
Persistent link: https://www.econbiz.de/10003180327
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Source apportionment of nitrogen and phosphorus inputs into the aquatic environment
2005
Persistent link: https://www.econbiz.de/10003228998
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Eesti NSV fosforiidivarude kasutamise majandusliku tasuvuse määramise metoodika : mit russ. u. dt. Résumé: Methodik zur Berechnung der Wirtschaftlichkeit der Ausbeutung der Phospho...
Habicht, K. - In: Eesti NSV Teaduste Akadeemia toimetised / … (1961) 2, pp. 104-112
Persistent link: https://www.econbiz.de/10002825848
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Rock phosphate mining in North West Queensland : a cost benefit analysis
Wilson, I. H.; Robertson, B. C.; Ellis, P. L. - In: Economic analysis and policy 4 (1973) 1, pp. 23-32
Persistent link: https://www.econbiz.de/10002985537