User talk:173.71.74.209

February 2011
We welcome and appreciate your contributions, but your recent edits to A-level Physics (Advancing Physics)/Stress, Strain & the Young Modulus had to be undone. Please see What is Wikibooks? to learn more about what contributions are beneficial to Wikibooks. Please be aware that some edits can be considered vandalism, use the sandbox for any test edits you would like to make, and read the welcome page to learn more about contributing constructively to this project. Thank you. – Adrignola discuss 00:04, 6 February 2011 (UTC)