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Main provisions of the crystals theory:
Practical techniques:
Copper(II) sulfateCopper(II) sulfate, Artem PavlukovArtem PavlukovVKontakte
Potassium chloridePotassium chloride, Vladimir RomanivVladimir RomanivVKontakte
Potassium hexacyanoferrate(III)Potassium hexacyanoferrate(III), Rostislav DolgikhRostislav DolgikhVKontakte
Magnesium sulfateMagnesium sulfate, Gleb VertyankinGleb VertyankinVKontakte