Задачи по химии. Разница масс. На пластинку 7
Видео-подготовка к ЦТ и ЕГЭ по химии
В контакте
Репетитор по химии по скайпу (Александр Коньков) и (логин в Skype)
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![Миротворец миссии SWISSINDO взят в плен АРиЯ требует содействия ФСБ Союз ССР []](https://sun9-24.userapi.com/aosp4hidtcjAm-5sXtl1_hfWnSL0F443H0g6Sw/nrBfVw2l0bI.jpg)
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