• "Responding to drought" by Southern Nevada Water Authority, December 2021 [United States of America] https://www.snwa.com/importance-of-conservation/responding-to-drought/index.html 2 comments 27/12/2021 economy
• "Responding to drought" by Southern Nevada Water Authority, December 2021 [State of Nevada, United States of America] https://www.snwa.com/importance-of-conservation/responding-to-drought/index.html 3 comments 27/12/2021 energy