1. 2016-07-04 [1] Re: "Physics with XO" by =?iso-8859-1?Q?Gu?= =?iso-88 olpc-deve James Cameron 2. 2016-07-04 [1] =?UTF-8?Q?=22Physics_with_XO=22_by_Guzm=C3=A1n_Trinid olpc-deve Sebastian Sil