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Simultaneous determination of iron and copper by third-derivative solid-phase spectrophotometry
(MARCEL DEKKER INC, 2002)
Simultaneous determination of iron and ruthenium by preconcentration on sulfopropyl sephadex cation exchanger
(ELSEVIER SCIENCE BV, 2002-12)
Copper contents in Mediterranean ecosystems in South America
(KLUWER ACADEMIC PUBL, 1997-05)
Subcritical water extraction and determination of nifedipine in pharmaceutical formulations
(AOAC INTERNATIONAL, 2006-04)