kw.\*:("PONCHA-SPRINGS")
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GEOLOGY AND MINERAL DEPOSITS OF THE PONCHA SPRINGS NE QUADRANGLE, CHAFFEE COUNTY, COLORADO.VAN ALSTINE RE.1969; GEOL. SURV. U.S.A., PROF. PAPER; USA; 1969, NUM. 0626, P. 1 A 52Miscellaneous
GEOLOGY AND MINERAL DEPOSITS OF THE PONCHA SPRINGS NE QUADRANGLE, CHAFFEE COUNTY, COLORADO. FLUORSPAR DEPOSITS.VAN ALSTINE RE; COX DC.1969; GEOL. SURV. U.S.A., PROF. PAPER; USA; 1969, NUM. 0626, P. 30 A 43Miscellaneous
