1 KDP, 13 Feb 2014 How River Rocks Round - Resolving the Shape-Size Paradox http://ht.ly/tzzym HT @Penn How River Rocks Round - Resolving the…
Jio̍k-Tsû Âng, 11 Dec 2013 How river rocks round: resolving the shape-size paradox How river rocks round: resolving the shape-size... How river rocks round…