Thesis (B.S.)--University of Missouri, School of Mines and Metallurgy, 1921. Thesis (M.S.)--University of Missouri, School of Mines and Metallurgy, 1921. Thesis (Professional Degree)--University of Missouri, School of Mines and Metallurgy, 1921. / The entire thesis text is included in file. Typescript. Illustrated by authors. J. H. Bowles determined to be John Hyer Bowles, L. E. Davidson determined to be Lewis Ely Davidson and Wm. F. Netzeband determined to be William Ferdinand Netzeband from "1874-1999 MSM-UMR Alumni Directory. Bowles earned a Professional Degree, Davidson earned a Master's Degree and Netzeband earned a Bachelor's Degree, all determined from same source. Title from title screen of thesis/dissertation PDF file (viewed May 8, 2009)