TY - BOOK T1 - Geology and mineral deposits of the Poncha Springs SE quadrangle, Chaffee County, Colorado, DA - 1974. CY - Washington, AU - Van Alstine, Ralph Erskine, VL - 829 CN - QE75 CN - TN24.C6 CN - QE75 PB - U.S. Govt. Print. Off., PP - Washington, PY - 1974. N1 - "Work done in cooperation with the Colorado State Mining Industrial Development Board." ID - 122231 KW - Mines and mineral resources KW - Geology TI - Geology and mineral deposits of the Poncha Springs SE quadrangle, Chaffee County, Colorado, ER -