by Charles Butts, Clyde Polhemus Ross, John Milton Nickles, Philip Sidney Smith, William Taylor Thom, George Martin Hall, Gail Francis Moulton, Carroll Harvey Wegemann
Report on Progress of Investigations in 1932
by Charles Butts, Clyde Polhemus Ross, John Milton Nickles, Philip Sidney Smith, William Taylor Thom, George Martin Hall, Gail Francis Moulton, Carroll Harvey Wegemann
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