But students should have modern phys. ALL...

Roger Highfield (@RogerHighfield) tweetou às 7:20 AM on ter, Jul 02, 2013: How nuclear tests can help catch ivory poachers http://t.co/nLR4IGjed6 (https://twitter.com/RogerHighfield/status/351948571970519041) Adquira o aplicativo oficial do Twitter em https://twitter.com/download