Preliminary notes on the revision of the geological map of eastern Colorado,
Toepelman, W. C. 1894-
Preliminary notes on the revision of the geological map of eastern Colorado, by W. C. Toepelman. - Boulder, Col., 1924. - 21 p. fold. map. 23 cm.
Map on loose sheet.
gs 25000033
Geology--Colorado--Maps.
QE91 / .A4 no. 20 QE91 / .T6
Preliminary notes on the revision of the geological map of eastern Colorado, by W. C. Toepelman. - Boulder, Col., 1924. - 21 p. fold. map. 23 cm.
Map on loose sheet.
gs 25000033
Geology--Colorado--Maps.
QE91 / .A4 no. 20 QE91 / .T6