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Provisional 2018 World Superbike calendar: 19-20 February AUS Phillip Island Grand Prix Circuit (TEST) 23-25 February AUS Phillip Island Grand Prix Circuit 23-25 March THA Chang International Circuit 13-15 April ESP MotorLand Aragón 20 -22 April NED TT Circuit Assen 11-13 May ITA Autodromo...