Supreme Court of Colorado September 1993 casesPeople v. YoungProperty Tax v. Prod. GeophysicalPeople v. BerkleyCherry Creek School v. VoelkerNorthern Colo. v. Three PeaksPurgatoire River Water v. WitteYampa Valley Elec. v. TeleckyAnderson v. BrinkhoffCity of Thornton v. Clear CreekSPECTRA PUB. v. PROP. TAX ADM'RPeople v. Stauffer