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$5.28Cryptocurrency : Mining, Investing and Trading in Blockchain, Including Bitcoin, Ethereum, Litecoin, Ripple, Dash, Dogecoin, Emercoin, Putincoin, AuroBetter World Books- $5.50Crypto Currency Mining: A Complete Introduction to Blockchain & Cryptocurrencies: (Bitcoin, Litecoin, Ethereum, Bitcoin Cash, Stellar, Tether, Monero, Dogecoin and More...) (Finance)Amazon