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08-29-2014, 05:23 AM
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Humans and Energy: Crash Course World History 207
 Humans and Energy: Crash Course World History 207 In which Stan Muller subs for John Green and teaches you about energy and humanity. Today we discuss the ideas put forth by Alfred Crosby in his book, Children of the Sun. Historically, almost... From:CrashCourse Views:301   Time:07:21More inEducation أكثر... ??????? ??????: Humans and Energy: Crash Course World History 207 || ??????: ahlam1399 || ??????: اسم منتداك
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العرض الشجري