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Main provisions of the crystals theory:
Practical techniques:
Copper(II) sulfateCopper(II) sulfate, Artem PavlukovArtem PavlukovVKontakte
Ammonium dihydrophosphateAmmonium dihydrophosphate, Aleksey BusarginAleksey BusarginVKontakte
Potassium hexacyanoferrate(III)Potassium hexacyanoferrate(III), Rostislav DolgikhRostislav DolgikhVKontakte
Aluminum-potassium sulfateAluminum-potassium sulfate, Stanislav PopovStanislav PopovVKontakte
Acetylsalicylic acidAcetylsalicylic acid, Grover SchrayerGrover SchrayerFlickr album
Étude sur la cristallographie. Auguste Bravais