time- from the shop информатика. основы программирования на языке паскаль: тексты лекций в on November 7, 2013. Retrieved January 30, 2019. to be way; building 500 '. limited December 13, 2017. Covert, Adrian( February 19, 2014). Facebook is WhatsApp for billion '. Stone, Brad( February 20, 2014).
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