9,244 followers
@ScienceShowoff Clear as crystal. You just need to know German. http://t.co/lj5GKZA648
@ScienceShowoff Clear as crystal. You just need to know German. http://t.co/lj5GKZA648
@ScienceShowoff Clear as crystal. You just need to know German. http://t.co/lj5GKZA648