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Index (280d5bb5-1619-4cf8-a672-58f75a9afec1)Jan 1, 1918
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Index (282b1b73-32bd-4b69-8eef-bea8de9021fb)
Jan 1, 1949
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Index (2916c425-6d10-4c10-9f64-b97f1efabdf4)
Jan 1, 1941
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Index (29895952-4137-459a-a6be-4613c57ffa54)[Page Officers of the Institute 5 Minutes of. Twentieth Meeting 9 "Cutter Bits"-J. H. Emrick 12 Discussion 16 Experiments in Roof Control-D. A. Stout 18 Discussion 28 Use of Permissible Powde
Jan 1, 1925
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Index (2a35da20-d039-403e-8045-d6fe11dee533)
Jan 1, 1919
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Index (2a57c9df-5721-4773-b6a7-3bc2d4e40c73)
Jan 1, 1879
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Index (2e0ce134-97a9-4223-916f-d2ecce4add52)
Jan 1, 1881
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Index (2fbe5a2f-12f1-4453-90c7-5df8fd337267)
Jan 1, 1931
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Index (308fccf5-e9a7-4826-9631-c0e2f9e989c8)
Jan 1, 1917
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Index (319d1866-dd86-4e94-84a7-2a61a2aabf1e)
Jan 1, 1949
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Index (31b2d111-d107-419f-8255-ba5466f653b5)
Jan 1, 1937
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Index (33661513-77c8-45ea-93a6-3e4f6d6e3994)
Jan 1, 1892
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Index (3411838c-b4c3-47f7-9d8d-70d2b58e2652)
Jan 1, 1949
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Index (3453565c-b609-4df4-9db8-3e94c67f11d7)
Jan 1, 1950
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Index (35c1e18f-9426-4451-874a-87ef5142a7a7)
Jan 1, 1934
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Index (37317df4-e11d-4b36-8234-48c3f3bbb0dc)
Jan 1, 1939
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Index (39584f63-6831-4ff0-a455-efb76e274742)
Jan 1, 1941
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Index (3abe55b1-a39a-41a6-96e1-6191bcb3bad3)
Jan 1, 1955
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Index (3bd8c12e-cc9c-480e-9b55-e969b345c6ea)
Jan 1, 1903
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Index (3d21f690-7b29-4530-a383-4e5a2196666d)
Jan 1, 1902