It takes extraordinary

[pumpui momo]

It takes extraordinary measures. If we get buried whole in typical soil our bones may survive for, say, 100 years. If we want to preserve skeletons for much further than that, you oftentimes need better conditions," he says.

อ่านต่อเพิ่มเติม โรงเรียนบ้านห้วยปริก

สาระสำคัญ  โรค