投稿日：2018/04/22(日) 10:53
投稿者：Haley　[home]　[mail]

I work for a publishers betamethasone dipropionate cream price Tom Murphy, a director of the Penn State University Marcellus Center for Research & Outreach, said that while the number of drilling rigs operating in Pennsylvania has declined, companies have learned to drill more efficiently, 'so fewer rigs are drilling more wells.'