Twin lakes district of Colorado,
Howell, J. V. 1891-
Twin lakes district of Colorado, by J. V. Howell. - Denver, Col., Eames bros., state printers, 1919. - 108 p. illus., fold. map in pocket, diagrs. 23 cm.
The author's dissertation, University of Iowa, 1922, but not published as a thesis.
Bibliography: p. 16-17.
gs 21000131
Geology--Colorado.
QE91 / .A4 no. 17
Twin lakes district of Colorado, by J. V. Howell. - Denver, Col., Eames bros., state printers, 1919. - 108 p. illus., fold. map in pocket, diagrs. 23 cm.
The author's dissertation, University of Iowa, 1922, but not published as a thesis.
Bibliography: p. 16-17.
gs 21000131
Geology--Colorado.
QE91 / .A4 no. 17