More about G. R. Hopkins:
| | Books by G. R. Hopkins: Books in the extended shelves: Hopkins, G. R. (Gordon Ray), 1937-: Crude oil and gasoline pipe lines in the United States May 1, 1941 (U.S. Dept. of the Interior, Bureau of Mines, 1941), also by F. S. Lott and United States Bureau of Mines (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: The movement of oil through the Panama Canal ([Washington, D.C.] : U.S. Dept. of Commerce, Bureau of Mines, 1926, 1926) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Natural-gasoline plants in the United States (U.S. Dept. of Commerce, Bureau of Mines, 1928), also by E. M. Seeley (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Natural-gasoline plants in the United States : January 1, 1930 (U.S. Dept. of Commerce, Bureau of Mines, 1930), also by E. M. Seeley (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Natural-gasoline plants in the United States : January 1, 1932 (U.S. Dept. of Commerce, Bureau of Mines, 1932), also by E. M. Seeley (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Petroleum refineries, including cracking plants, in the United States, January 1, 1939 (U.S. Dept. of the Interior, Bureau of Mines, 1939), also by E. W. Cochrane and United States Bureau of Mines (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Petroleum refineries, including cracking plants, in the United States, January 1, 1940 (U.S. Dept. of the Interior, Bureau of Mines, 1940), also by E. W. Cochrane and United States Bureau of Mines (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Petroleum refineries, including cracking plants, in the United States, January 1, 1941 (U.S. Dept. of the Interior, Bureau of Mines, 1941), also by E. W. Cochrane and United States Bureau of Mines (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Scour around bridge piers (Dept. of Transportation, Federal Highway Administration, Offices of Research and Development, Environmental Division ;, 1980), also by Behzad Kasraie, R. W. Vance, and United States. Federal Highway Administration. Environmental Division (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Some economic phases of the carbon-black industry (U.S. Dept. of Commerce, Bureau of Mines, 1927) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Stocks of petroleum products held by exporters (Washington, D.C. : U.S. Department of the Interior, Bureau of Mines, 1927., 1927) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of cracking plants, January 1, 1928 (U.S. Dept. of Commerce, Bureau of Mines, 1928) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of cracking plants, January 1, 1929 (U.S. Dept. of Commerce, Bureau of Mines, 1929) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of cracking plants, January 1, 1932 (U.S. Dept. of the Interior, Bureau of Mines, 1932) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of fuel consumption at refineries in 1929 (United States Bureau of Mines, 1930), also by United States Bureau of Mines (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of fuel consumption at refineries in 1930 (United States Bureau of Mines, 1931), also by United States Bureau of Mines (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of fuel consumption at refineries in 1931 (U.S. Dept. of Commerce, Bureau of Mines, 1932) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of fuel consumption at refineries in 1932 ([U.S. Dept. of Commerce], Bureau of Mines, 1934) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of fuel consumption at refineries in 1933 (U.S. Dept. of the Interior, Bureau of Mines, 1935) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of fuel consumption at refineries in 1935 (U.S. Dept. of the Interior, Bureau of Mines, 1937) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of fuel consumption at refineries in 1936 (U.S. Dept. of the Interior, Bureau of Mines, 1938) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of fuel consumption at refineries in 1937 (U.S. Dept. of the Interior, Bureau of Mines, 1938) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of fuel consumption at refineries in 1938 (U.S. Dept. of the Interior, Bureau of Mines, 1939) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of fuel consumption at refineries in 1939 (U.S. Dept. of the Interior, Bureau of Mines, 1941) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of fuel consumption at refineries in 1940 (U.S. Dept. of the Interior, Bureau of Mines, 1942) (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of fuel consumption at refineries in 1941 (U.S. Dept. of the Interior, Bureau of Mines, 1943), also by United States Bureau of Mines (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Survey of gravities of domestic crudes (Washington, D.C. : United States, Department of Commerce, Bureau of Mines, 1929., 1929), also by A. B. Coons and United States Bureau of Mines (page images at HathiTrust) Hopkins, G. R. (Gordon Ray), 1937-: Technology, employment, and output per man in petroleum and natural-gas production (Philadelphia, Pa., 1939), also by O. E. Kiessling, H. O. Rogers, and United States Bureau of Mines (page images at HathiTrust)
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