What is a Leap Year?
40
4
3,925 المشاهدات·
02/28/12
في
Life
Help support videos like this: https://www.patreon.com/cgpgrey **Grey T-Shirts for sale!**: http://cgpgrey.com/t-shirt Also check out MinutePhysics video: http://www.youtube.com/watch?v=53glKEPzElA & SciShow: http://www.youtube.com/watch?v=HnDsXhQHrEw
أظهر المزيد
0 تعليقات
sort ترتيب حسب
