 | This user is an alternative account of Piotrus. This notice confirms that the user is familiar with Wikipedia's policy on using multiple accounts and that this account will not be used for sockpuppetry. You may discuss this account at User talk:Piotrus. |
 | This account (Hanyangprofessor) is a doppelgänger account created by Piotrus, an established user, for class teaching purposes and for security in public places.. Please see his talk page for relevant discussion. You can also view Hanyangprofessor's edit count by clicking here.
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