by Charles Lee McGuinness, David A. Rickert, Edward Malcolm MacKevett, Geological Survey (U.S.), Harold Edgar Thomas, Harold P. Guy, James E. Elliott, John Henry Feth, John Richard Sheaffer, John Stevens Schlee, Linda J. Britton, Paul Kellogg Theobald, Robert Sprague Jones, Saul Edward Rantz, George William Moore, Charles Emmet Thompson, Davis W. Ellis, Eli A. Silver, James E. Goddard, James G. Smith, R. C. Averett, William Joseph Schneider, Andrew Maute Spieker, R. F. Ferreira, John David Wells
Which Will Prevail?
by Charles Lee McGuinness, David A. Rickert, Edward Malcolm MacKevett, Geological Survey (U.S.), Harold Edgar Thomas, Harold P. Guy, James E. Elliott, John Henry Feth, John Richard Sheaffer, John Stevens Schlee, Linda J. Britton, Paul Kellogg Theobald, Robert Sprague Jones, Saul Edward Rantz, George William Moore, Charles Emmet Thompson, Davis W. Ellis, Eli A. Silver, James E. Goddard, James G. Smith, R. C. Averett, William Joseph Schneider, Andrew Maute Spieker, R. F. Ferreira, John David Wells
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