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Logam timbal (Pb) dan kromium (Cr) (1) |
sedimen (1) |
spektrofotometri serapan atom (2) |
Tembaga dan seng (1) |
Logam timbal (Pb) dan kromium (Cr) (1) |
sedimen (1) |
spektrofotometri serapan atom (2) |
Tembaga dan seng (1) |