00262nam a2200121 45000010006000000050017000069000010000231000020000332450044000537730019000979420007001169990017001239095820260918153729.0 a72082 aTALAVERA, Jorge aLas Criptomonedas y su desafío legal. gL510 B5721 v.2 c16 c90958d90958