Water Conservation Essay Research Paper The City — страница 3

Arizona Daily Star. September 24, 1998. 6. Sheldon, Dana. Estimated Water Balance. Available on the internet – on the Water Resources in the Tucson Basin Colloquia Homepage, under the 1996 Final Class Reports link. http://ag.arizona.edu/swes/tucwater1/final96.htm . 7. Tucson Regional Water Council Homepage. http://www.azstarnet.com/~trwc/prior.thm. 8. Water Words. Published by SAWARA. Volume 16, No. 1 – Jan./Feb./March, 1998.