More about G. R. Hopkins:
| | Books by G. R. Hopkins: Books in the extended shelves: Hopkins, G. R. (George Randolph), 1898-: Natural-gasoline plants in the United States : January 1, 1934 (U.S. Dept. of the Interior, Bureau of Mines, 1934), also by E. M. Seeley (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Natural-gasoline plants in the United States : January 1, 1936 (U.S. Dept. of the Interior, Bureau of Mines, 1936), also by E. M. Seeley (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Natural-gasoline plants in the United States January 1, 1938 (U.S. Dept. of the Interior, Bureau of Mines, 1938), also by E. M. Seeley and United States Bureau of Mines (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Natural-gasoline plants in the United States January 1, 1940 (U.S. Dept. of the Interior, Bureau of Mines, 1940), also by E. M. Seeley and United States Bureau of Mines (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refineries in the United States, January 1, 1928 (U. S. Dept. of Commerce, Bureau of Mines, 1928) (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refineries in the United States, January 1, 1929 (U.S. Dept. of Commerce, Bureau of Mines, 1929), also by E. W. Cochrane (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refineries in the United States, January 1, 1930 (U.S. Dept. of Commerce, Bureau of Mines, 1930), also by E. W. Cochrane (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refineries in the United States, January 1, 1931 (U.S. Dept. of Commerce, Bureau of Mines, 1931), also by E. W. Cochrane (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refineries in the United States, January 1, 1932 (U.S. Dept. of Commerce, Bureau of Mines, 1932), also by E. W. Cochrane and United States Bureau of Mines (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refineries, including cracking plants, in the United States, January 1, 1933 (United States Bureau of Mines, 1933), also by E. W. Cochrane and United States Bureau of Mines (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refineries, including cracking plants, in the United States, January 1, 1934 (U.S. Dept. of the Interior, Bureau of Mines, 1934), also by E. W. Cochrane (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refineries, including cracking plants, in the United States, January 1, 1935 (U.S. Dept. of the Interior, Bureau of Mines, 1935), also by E. W. Cochrane (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refineries, including cracking plants, in the United States, January 1, 1936 (U.S. Dept. of the Interior, Bureau of Mines, 1936), also by E. W. Cochrane (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refineries, including cracking plants, in the United States, January 1, 1937 (U.S. Dept. of the Interior, Bureau of Mines, 1937), also by E. W. Cochrane (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refineries, including cracking plants, in the United States, January 1, 1938 (U.S. Dept. of the Interior, Bureau of Mines, 1938), also by E. W. Cochrane and United States Bureau of Mines (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refinery statistics, 1916-1925 (Govt. Print. Off., 1927), also by United States Bureau of Mines (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refinery statistics, 1926 (U.S. Dept. of Commerce, Bureau of Mines, 1927) (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refinery statistics, 1927 (U.S. Dept. of Commerce, Bureau of Mines, 1929) (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refinery statistics, 1929 (U.S. Dept. of Commerce, Bureau of Mines, 1929) (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum refinery statistics, 1930 (U.S. Dept. of Commerce, Bureau of Mines, 1932) (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Petroleum statistics, 1935-38 (U.S. Govt. Print. Off., 1940) (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Survey of cracking plants, January 1, 1930 (U.S. Dept. of Commerce, Bureau of Mines, 1930) (page images at HathiTrust) Hopkins, G. R. (George Randolph), 1898-: Survey of cracking plants : January 1, 1931 (U.S. Dept. of Commerce, Bureau of Mines, 1931), also by United States Bureau of Mines (page images at HathiTrust)
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