For citations:
Zakirov N.N., Davletshin E.A. ANALYSIS OF CONE BITS SEALING SYSTEM. Oil and Gas Studies. 2016;(1):38-43. (In Russ.) https://doi.org/10.31660/0445-0108-2016-1-38-43
Zakirov N.N., Davletshin E.A. ANALYSIS OF CONE BITS SEALING SYSTEM. Oil and Gas Studies. 2016;(1):38-43. (In Russ.) https://doi.org/10.31660/0445-0108-2016-1-38-43