Experimental and Theoretical Investigation of Drilling of Rocks by Impregnated Diamond Core Bits http://127.0.0.1/xmlui/handle/123456789/2634 Thu, 16 Apr 2026 16:25:44 GMT 2026-04-16T16:25:44Z Experimental and Theoretical Investigation of Drilling of Rocks by Impregnated Diamond Core Bits http://127.0.0.1/xmlui/handle/123456789/2635 Experimental and Theoretical Investigation of Drilling of Rocks by Impregnated Diamond Core Bits Rao, Karanam Umamaheshwar Wed, 01 Sep 1993 00:00:00 GMT http://127.0.0.1/xmlui/handle/123456789/2635 1993-09-01T00:00:00Z