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Contribución al estudio de la genesis de fosforitas
Spillmann, Franz - 1952
Persistent link: https://www.econbiz.de/10002286164
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Phosphates naturels et engrais phosphatés dans le monde : (Role de l'aide internationale)
1972
Persistent link: https://www.econbiz.de/10002307781
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Report : Feb. 1980
1980
Persistent link: https://www.econbiz.de/10003291488
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Compagnie des Phosphates de Gafsa
19XX
Persistent link: https://www.econbiz.de/10003292908
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Report on international phosphate cartels
1946
Persistent link: https://www.econbiz.de/10003223835
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Index for a world survey of phosphate deposits
1964 - 2. ed
Persistent link: https://www.econbiz.de/10003145729
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Indian phosphate rock and its utilisation
1972
Persistent link: https://www.econbiz.de/10003150766
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Indian phosphate rock in fertiliser industry : a group discussion
1972
Persistent link: https://www.econbiz.de/10003150770