User talk:75.164.116.55

December 2011
Hello, and welcome! Although everyone is welcome to contribute, at least one of your recent edits, such as the one you made to Johannes Diderik van der Waals with this edit, did not appear to be constructive, and has been reverted or removed. Thank you! Σ is not home (Leave message) 04:12, 1 December 2011 (UTC)