Jean, Frank Covert, 1880-
Man and his physical universe / by Frank Covert Jean, Ezra Clarence Harrah and Fred Louis Herman with the editorial collaboration of Samuel Ralph Powers.
Science.
1943.
Harrah, Ezra Clarence, 1889- joint author.
Herman, Fred Louis, 1894- joint author.
Powers, Samuel Ralph, 1887-1970, editor.