PT - JOURNAL ARTICLE AU - Dennis Wichelns AU - David Cone TI - Tiered pricing motivates Californians to conserve water DP - 1992 Mar 01 TA - Journal of Soil and Water Conservation PG - 139--144 VI - 47 IP - 2 4099 - http://www.jswconline.org/content/47/2/139.short 4100 - http://www.jswconline.org/content/47/2/139.full