Diamond Drill Handbook / by James D. Cumming - 1st.ed. - Toronto : J.K. Smit & Sons of Canada , 1951 - xxiii, 501 p.: graph, ill.; 23 cm
Includes indexs ( p.: 493 - 501 )
--Rock Drills
--Industrials--Diamonds
622.2 CUM
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Diamond Drill Handbook / by James D. Cumming - 1st.ed. - Toronto : J.K. Smit & Sons of Canada , 1951 - xxiii, 501 p.: graph, ill.; 23 cm
Includes indexs ( p.: 493 - 501 )
--Rock Drills
--Industrials--Diamonds
622.2 CUM
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