DD28902A - - Google Patents

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Publication number
DD28902A
DD28902A DD28902DA DD28902A DD 28902 A DD28902 A DD 28902A DD 28902D A DD28902D A DD 28902DA DD 28902 A DD28902 A DD 28902A
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DD
German Democratic Republic
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Publication of DD28902A publication Critical patent/DD28902A/xx

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DD28902D DD28902A (it)

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DD28902A true DD28902A (it)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511664A1 (fr) * 1981-08-24 1983-02-25 Petroleo Brasileiro Sa Procede de solubilisation partielle de roches phosphatees et d'obtention d'engrais phosphate a partir de ces roches

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2511664A1 (fr) * 1981-08-24 1983-02-25 Petroleo Brasileiro Sa Procede de solubilisation partielle de roches phosphatees et d'obtention d'engrais phosphate a partir de ces roches
DE3229890A1 (de) * 1981-08-24 1983-03-03 Petroléo Brasileiro S.A. - Petrobrás, Rio de Janeiro Verfahren zum aufschluss von phosphathaltigem gestein zwecks gewinnung von phosphorsaeure und/oder phosphatduengemitteln und verwendung des verfahrens zur herstellung eines pulverfoermigen np-duengemittels mit langzeitwirkung

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DD28902A (it)