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Mandeleev's periodic table| Newlands law of octaves | Doberniers's triads| MERITS AND DEMERITS

Mandeleev's periodic table| Newlands law of octaves | Doberniers's triads|  MERITS AND DEMERITS LIKE AND SUBSRIBE
Mandeleev's periodic table| Newlands law of octaves | Doberniers's triads| MERITS AND DEMERITS
Mandeleev's periodic table| Newlands law of octaves | Doberniers's triads| MERITS AND DEMERITS
Mandeleev's periodic table| Newlands law of octaves | Doberniers's triads| MERITS AND DEMERITS

DEMERITS

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