A newly released history of 20th Century Russia, written by a team of 45 scholars and edited by historian Andrei Zubov, includes a statement that much of the country's recent past is painfully difficult to study, which is why many refuse to do so.

VOA: standard.2009.12.25

Let me say a little bit,first of all, about the way scholars have categorized the history of Greece.

首先,我要说一下,关于,学者是如何划分希腊历史的

耶鲁公开课 - 古希腊历史简介课程节选

Let me say a little bit,first of all, about the way scholars have categorized the history of Greece.

首先,我要说一下,关于,学者是如何划分希腊历史的

耶鲁公开课 - 古希腊历史简介课程节选