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1. Noise

   ... begin. Rotary drilling is used. Rocks are penetrated by a bit which is attached to the drill pipe. Drilling mud injected to the drill ...

   Artykuł - 10/16/2014 - 15:15

2. Innovations without the Government?

   ... A. Dourfaye, W. King, M. Thigpen, The current state of PDC bit technology, World Oil, September 2010, s. 41-46. Struktura RTF ...

   Artykuł - 12/09/2014 - 12:15

3. Innowacje bez państwa?

   ... A. Dourfaye, W. King, M. Thigpen, The current state of PDC bit technology, World Oil, September 2010, s. 41-46. Struktura RTF ...

   Artykuł - 01/19/2015 - 12:34