User talk:Dongyoun79

Welcome!
Hello, Dongyoun79, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are some pages that you might find helpful: Please remember to sign your messages on talk pages by typing four tildes ( ~ ); this will automatically insert your username and the date. If you need help, check out Questions, ask me on my talk page, or ask your question on this page and then place  before the question. Again, welcome! Vsmith (talk) 10:00, 7 May 2013 (UTC)
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Regarding your recent edit to Urban heat island, please read WP:reliable sources as a class wiki does not qualify. Thanks, Vsmith (talk) 10:00, 7 May 2013 (UTC)